ISD Grade 8 Science Midterm - 2024 (12/18/2024)

Last updated 11 months ago

44 questions

Instructions

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Library

ISD Grade 8 Science Midterm - 2024 (12/18/2024)

Last updated 11 months ago

44 questions

Instructions

Please read the questions carefully. Take your time. When you have questions, please let me know. You will have 65 minutes to work on this. Good luck. You got this! 

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I (type your name) _______ acknowledge that I have read the "Academic Honesty Statement"  above on this date (enter date) _______ .

Your midterm officially begins now. Good luck!

Part 1: Vectors and Forces 

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3

A force is defined as a _______ or a _______. As vectors, all forces have both _______ and _______. Force is measured with a scientific unit called _______ .

1

Part 2: Time & Distance Graphs 

1

Part 3: Velocity and Speed 

1

2

A _______ is a quantity that has both size and direction. _______ is a vector quantity because it has speed in a specific direction. Average speed depends on the total _______ traveled along a path. Average velocity depends on the _______ of an object. 

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4

Draggable item		Corresponding Item

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Draggable item		Corresponding Item

Part 4: Acceleration 

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2

_______ is the change in position/distance over time in a certain direction. _______ is the change in velocity over time. 

1

3

The slope on a distance/time graphs tell us the_______ . The slope on a velocity/time graph tells us the _______ .  

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Part 5: Short Answer Questions 

4

Based on the vector diagram above, answer the following questions. Be sure to answer all parts of this question for full credit.
- What is the distance traveled?
- What is the displacement? Explain what this means.
- What information would be needed to find the average speed? What information would be needed to find the average velocity?

4

Look at the data below.
- What is the acceleration of the two objects?
- Which object is accelerating more?

Show how you arrived at your answer. Use the "Show your work" feature to show your calculations.

Subaru Outback - In 40 seconds, the car went from 18 m/s to 36 m/s.
Toyota Tacoma - In 25 seconds, the car went from 22 m/s to 8 m/s.

Acceleration = Change in Velocity / Time
OR
Acceleration = (final velocity - initial velocity) / (final time - initial time)

3

Look at the graph above and tell a story. Try to be specific to best demonstrate that you understand the graph and its details.

3

Given the force arrow diagram above, what is the net force? Are the forces here unbalanced or balanced? Will the velocity of the box change? Why?

Be sure to answer all parts of this question for full credit.

Please read the questions carefully. Take your time. When you have questions, please let me know. You will have 65 minutes to work on this. Good luck. You got this! 

----Please read before starting your midterm. ----
Begin the midterm. When finished, do something quietly (seriously, quietly!!).
Midterm Test-Taking Tips:
*****READ THE ENTIRE QUESTION *********
Read the entire question!!
Read tips (a.) and (b.) from above.
Check your work before submitting.
If you’re not sure, try to eliminate options that you know are wrong (with multiple choice questions).
DON’T leave any questions blank. Always at least try. Leaving questions blank and later saying, “I don’t know” is a bad look. Trust me. The person typing this right now is also the person grading this. Hint hint.
Read tips (a.) and (b.) again. Geeeeeeeeeeeez.
Academic Honesty Statement
At ISDenver, we value honesty, integrity, and fairness in all academic work. By taking this exam, you agree to adhere to the principles of academic honesty, which include:
Not using unauthorized materials, devices, or assistance during the exam.
Not communicating with other students or external sources during the exam.
Submitting only your original work.
Reporting any concerns about academic honesty to a teacher or exam supervisor.
By signing below, I confirm that I understand and will follow the Academic Honesty Policy. I acknowledge that violations may result in disciplinary action, including receiving a zero on the exam.

I (type your name) _______ acknowledge that I have read the "Academic Honesty Statement"  above on this date (enter date) _______ .

Your midterm officially begins now. Good luck!

Part 1: Vectors and Forces 

A vector describes a quantity's and .

magnitude and direction

force and reference point

speed and velocity 

position and direction 

An object with balanced forces acting on it would ________.

have a positive net force acting on it

change direction

maintain a constant velocity

change speed 

A ______ is a place or object to which you compare to in order to determine motion.

reference point 

position 

x and y axis 

velocity 

_____ is a change in position over time.

Displacement is the total distance traveled during an event. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

A force is defined as a _______ or a _______. As vectors, all forces have both _______ and _______. Force is measured with a scientific unit called _______ .

Applied force and spring force are both examples of noncontact forces. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

If the above vector diagram (from PhET, drip) represented someone's traveled path as shown by vectors a, b, and c, what distance did this person travel (in meters)?

If the above vector diagram (from PhET, drip) represented someone's traveled path as shown by vectors a, b, and c, what was that person's total displacement (in meters)?

Which of the above vector diagrams would best represent an airplane traveling into the wind (headwind)?

A

B

C

If the net force on an object is 0 Newtons, then the forces acting on this object are _________.

unbalanced 

balanced 

Part 2: Time & Distance Graphs 

On time/distance graphs, the x-axis should always represent time. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

On a time/distance graph, the y-axis represents the reference point. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

Of the three graphs above, which one represents an object moving at an uniform (constant) speed? NOTE: position is the same as distance

1

2

3

Of the three graphs above, which one represents an object not moving? NOTE: position is the same as distance

1

2

3

Of the three graphs above, which one shows acceleration happening? NOTE: position is the same as distance

1

2

3

2 and 3

Based on the graph above, of the three objects moving, which one is moving the slowest?

A

B

C

All the objects are at rest

On a time/distance graph, the slope represents ________.

how far the object has traveled 

how fast the object is traveling 

how far the object is from the reference point 

how long the object is traveling for 

The above graph shows Mr. Siegel traveling from school to the PhET merch store. During what time listed was Mr. Siegel most likely on a break during this trip?

10:15

9:30

9:45

11:00

The above graph shows Mr. Siegel traveling from school to the PhET merch store. Based on the graph, how far is the PhET merch store from school?

40 miles

50 miles

90 miles 

80 miles

Based on the graph above, what was the total distance traveled?

120 kilometers 

150 kilometers

0 kilometers 

60 kilometers 

Which story best represents the graph above?

A car left home traveling at a constant speed for two hours, then took a 1-hour break. The car then traveled again at a constant speed, but slower, for 30 min. Finally, the car returned home at a constant speed. 

A car left the home traveling at a constant speed for two hours, then took a 1-hour break. The car then traveled again at a constant speed, but faster, for 30 min. Finally, the car returned home at a constant speed.

A car left the home traveling at a constant speed, then accelerated for 30 mins. It then took a 1-hour break and returned home, which took 90 minutes. 

A car left the home accelerating for two hours and then took a 1-hour break. It then accelerated even more for 30 mins. It then returned home during which it decelerated. 

Part 3: Velocity and Speed 

______ is how fast something is traveling in a specific direction.

Speed

Velocity 

Dak Prescot 

To find the numerical value that represents the velocity of an object, you must ________.

Divide the change in distance (or displacement) over the change in time 

Multiply the change in time with the change in direction 

Divide the change in time by the change in distance (or displacement)

Divide the change in speed over the change in time 

A _______ is a quantity that has both size and direction. _______ is a vector quantity because it has speed in a specific direction. Average speed depends on the total _______ traveled along a path. Average velocity depends on the _______ of an object. 

Based on the above velocity/time graph, which object is at rest?

1

2

3

All objects are moving 

Based on the above velocity/time graph, which object is moving at a constant velocity?

1

2

3

All objects are moving at a constant velocity

Based on the above velocity/time graph, object 1 is moving with the most acceleration. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

On a velocity/time graph, a line with a downward slope (a line going down) means ___________.

the object is at rest 

the object is changing directions 

the object is returning to the reference point 

the object is slowing down 

Match the distance/time graph with the correct velocity/time graph:

Draggable item		Corresponding Item

Match the short story (or event) with the correct velocity/time graph:

Draggable item		Corresponding Item
An object is accelerating, then maintaining a constant velocity, and then slowing down or decelerating.
An object is slowing down, or decelerating, but not at a constant rate.
An object is accelerating at a constant rate.
An object is traveling at a constant velocity.

Part 4: Acceleration 

Which of the following would be a correct unit for acceleration?

meters per second squared 

kilometers per hour heading southwest 

miles per hour 

meters per second 

_______ is the change in position/distance over time in a certain direction. _______ is the change in velocity over time. 

An object moving with a constant acceleration is not increasing or decreasing its speed/velocity. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

Acceleration can best be described as a change in ________________.

magnitude and/or velocity 

speed and/or direction 

direction 

speed 

Which scenario does NOT describe an example of acceleration?

A car increases its speed while turning to the left. 

A car decreases its speed while driving straight ahead. 

A car maintains a constant speed while turning to the right. 

A car maintains a constant speed while driving straight ahead. 

The slope on a distance/time graphs tell us the_______ . The slope on a velocity/time graph tells us the _______ .  

Looking at the graphs above, which one shows an object increasing its speed/velocity?

Graph (a)

Graph (b)

Neither graph shows an object increasing its speed 

Both graphs show an object increasing its speed

Which graph best shows an object decreasing its speed/velocity and then quickly increasing its speed/velocity:

Part 5: Short Answer Questions 

Based on the vector diagram above, answer the following questions. Be sure to answer all parts of this question for full credit.
- What is the distance traveled?
- What is the displacement? Explain what this means.
- What information would be needed to find the average speed? What information would be needed to find the average velocity?

Look at the data below.
- What is the acceleration of the two objects?
- Which object is accelerating more?

Show how you arrived at your answer. Use the "Show your work" feature to show your calculations.

Subaru Outback - In 40 seconds, the car went from 18 m/s to 36 m/s.
Toyota Tacoma - In 25 seconds, the car went from 22 m/s to 8 m/s.

Acceleration = Change in Velocity / Time
OR
Acceleration = (final velocity - initial velocity) / (final time - initial time)

Look at the graph above and tell a story. Try to be specific to best demonstrate that you understand the graph and its details.

Given the force arrow diagram above, what is the net force? Are the forces here unbalanced or balanced? Will the velocity of the box change? Why?

Be sure to answer all parts of this question for full credit.

----Please read before starting your midterm. ----
Begin the midterm. When finished, do something quietly (seriously, quietly!!).
Midterm Test-Taking Tips:
*****READ THE ENTIRE QUESTION *********
Read the entire question!!
Read tips (a.) and (b.) from above.
Check your work before submitting.
If you’re not sure, try to eliminate options that you know are wrong (with multiple choice questions).
DON’T leave any questions blank. Always at least try. Leaving questions blank and later saying, “I don’t know” is a bad look. Trust me. The person typing this right now is also the person grading this. Hint hint.
Read tips (a.) and (b.) again. Geeeeeeeeeeeez.
Academic Honesty Statement
At ISDenver, we value honesty, integrity, and fairness in all academic work. By taking this exam, you agree to adhere to the principles of academic honesty, which include:
Not using unauthorized materials, devices, or assistance during the exam.
Not communicating with other students or external sources during the exam.
Submitting only your original work.
Reporting any concerns about academic honesty to a teacher or exam supervisor.
By signing below, I confirm that I understand and will follow the Academic Honesty Policy. I acknowledge that violations may result in disciplinary action, including receiving a zero on the exam.

A vector describes a quantity's ________ and ________. 

magnitude and direction

force and reference point

speed and velocity 

position and direction 

An object with balanced forces acting on it would ________. 

have a positive net force acting on it

change direction

maintain a constant velocity

change speed 

A ______ is a place or object to which you compare to in order to determine motion. 

reference point 

position 

x and y axis 

velocity 

_____ is a change in position over time. 

Distance

Displacement

Velocity 

Motion 

Vector 

Displacement is the total distance traveled during an event. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

Applied force and spring force are both examples of noncontact forces.  (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

If the above vector diagram (from PhET, drip) represented someone's traveled path as shown by vectors a, b, and c, what distance did this person travel (in meters)?

16.3 meters 

18 meters 

28 meters 

13 meters

5 meters

0 meters

If the above vector diagram (from PhET, drip) represented someone's traveled path as shown by vectors a, b, and c, what was that person's total displacement (in meters)?

13 meters

5 meters

0 meters 

16.3 meters 

Impossible to tell from the diagram

28 meters 

Which of the above vector diagrams would best represent an airplane traveling into the wind (headwind)?

A

B

C

If the net force on an object is 0 Newtons, then the forces acting on this object are _________.

unbalanced 

balanced 

On time/distance graphs, the x-axis should always represent time. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

On a time/distance graph, the y-axis represents the reference point. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

Of the three graphs above, which one represents an object moving at an uniform (constant) speed? NOTE: position is the same as distance 

1

2

3

Of the three graphs above, which one represents an object not moving? NOTE: position is the same as distance 

1

2

3

Of the three graphs above, which one shows acceleration happening? NOTE: position is the same as distance 

1

2

3

2 and 3

Based on the graph above, of the three objects moving, which one is moving the slowest? 

A

B

C

All the objects are at rest

On a time/distance graph, the slope represents ________. 

how far the object has traveled 

how fast the object is traveling 

how far the object is from the reference point 

how long the object is traveling for 

The above graph shows Mr. Siegel traveling from school to the PhET merch store. During what time listed was Mr. Siegel most likely on a break during this trip? 

10:15

9:30

9:45

11:00

The above graph shows Mr. Siegel traveling from school to the PhET merch store. Based on the graph, how far is the PhET merch store from school? 

40 miles

50 miles

90 miles 

80 miles

Based on the graph above, what was the total distance traveled? 

120 kilometers 

150 kilometers

0 kilometers 

60 kilometers 

Which story best represents the graph above?

A car left home traveling at a constant speed for two hours, then took a 1-hour break. The car then traveled again at a constant speed, but slower, for 30 min. Finally, the car returned home at a constant speed. 

A car left the home traveling at a constant speed for two hours, then took a 1-hour break. The car then traveled again at a constant speed, but faster, for 30 min. Finally, the car returned home at a constant speed.

A car left the home traveling at a constant speed, then accelerated for 30 mins. It then took a 1-hour break and returned home, which took 90 minutes. 

A car left the home accelerating for two hours and then took a 1-hour break. It then accelerated even more for 30 mins. It then returned home during which it decelerated. 

______ is how fast something is traveling in a specific direction. 

Speed

Velocity 

Dak Prescot 

To find the numerical value that represents the velocity of an object, you must ________. 

Divide the change in distance (or displacement) over the change in time 

Multiply the change in time with the change in direction 

Divide the change in time by the change in distance (or displacement)

Divide the change in speed over the change in time 

Based on the above velocity/time graph, which object is at rest? 

1

2

3

All objects are moving 

Based on the above velocity/time graph, which object is moving at a constant velocity?

1

2

3

All objects are moving at a constant velocity

Based on the above velocity/time graph, object 1 is moving with the most acceleration. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

On a velocity/time graph, a line with a downward slope (a line going down) means ___________. 

the object is at rest 

the object is changing directions 

the object is returning to the reference point 

the object is slowing down 

Match the distance/time graph with the correct velocity/time graph: 

Match the short story (or event) with the correct velocity/time graph: 

An object is accelerating, then maintaining a constant velocity, and then slowing down or decelerating.

An object is slowing down, or decelerating, but not at a constant rate. 

An object is accelerating at a constant rate. 

An object is traveling at a constant velocity. 

Which of the following would be a correct unit for acceleration? 

meters per second squared 

kilometers per hour heading southwest 

miles per hour 

meters per second 

An object moving with a constant acceleration is not increasing or decreasing its speed/velocity. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

True

False

Acceleration can best be described as a change in ________________. 

magnitude and/or velocity 

speed and/or direction 

direction 

speed 

Which scenario does NOT describe an example of acceleration?

A car increases its speed while turning to the left. 

A car decreases its speed while driving straight ahead. 

A car maintains a constant speed while turning to the right. 

A car maintains a constant speed while driving straight ahead. 

Looking at the graphs above, which one shows an object increasing its speed/velocity? 

Graph (a)

Graph (b)

Neither graph shows an object increasing its speed 

Both graphs show an object increasing its speed

Which graph best shows an object decreasing its speed/velocity and then quickly increasing its speed/velocity:

ISD Grade 8 Science Midterm - 2024 (12/18/2024)

ISD Grade 8 Science Midterm - 2024 (12/18/2024)

Your midterm officially begins now. Good luck!

Part 1: Vectors and Forces

Part 2: Time & Distance Graphs

Part 3: Velocity and Speed

Part 4: Acceleration

Part 5: Short Answer Questions

Look at the graph above and tell a story. Try to be specific to best demonstrate that you understand the graph and its details.

Given the force arrow diagram above, what is the net force? Are the forces here unbalanced or balanced? Will the velocity of the box change? Why? Be sure to answer all parts of this question for full credit.

Academic Honesty Statement

Your midterm officially begins now. Good luck!

Part 1: Vectors and Forces

A vector describes a quantity's ________ and ________.

An object with balanced forces acting on it would ________.

A ______ is a place or object to which you compare to in order to determine motion.

_____ is a change in position over time.

Displacement is the total distance traveled during an event. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

Applied force and spring force are both examples of noncontact forces. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

If the above vector diagram (from PhET, drip) represented someone's traveled path as shown by vectors a, b, and c, what distance did this person travel (in meters)?

If the above vector diagram (from PhET, drip) represented someone's traveled path as shown by vectors a, b, and c, what was that person's total displacement (in meters)?

Which of the above vector diagrams would best represent an airplane traveling into the wind (headwind)?

If the net force on an object is 0 Newtons, then the forces acting on this object are _________.

Part 2: Time & Distance Graphs

On time/distance graphs, the x-axis should always represent time. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

On a time/distance graph, the y-axis represents the reference point. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

Of the three graphs above, which one represents an object moving at an uniform (constant) speed? NOTE: position is the same as distance

Of the three graphs above, which one represents an object not moving? NOTE: position is the same as distance

Of the three graphs above, which one shows acceleration happening? NOTE: position is the same as distance

Based on the graph above, of the three objects moving, which one is moving the slowest?

On a time/distance graph, the slope represents ________.

The above graph shows Mr. Siegel traveling from school to the PhET merch store. During what time listed was Mr. Siegel most likely on a break during this trip?

The above graph shows Mr. Siegel traveling from school to the PhET merch store. Based on the graph, how far is the PhET merch store from school?

Based on the graph above, what was the total distance traveled?

Which story best represents the graph above?

Part 3: Velocity and Speed

______ is how fast something is traveling in a specific direction.

To find the numerical value that represents the velocity of an object, you must ________.

Based on the above velocity/time graph, which object is at rest?

Based on the above velocity/time graph, which object is moving at a constant velocity?

Based on the above velocity/time graph, object 1 is moving with the most acceleration. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

On a velocity/time graph, a line with a downward slope (a line going down) means ___________.

Match the distance/time graph with the correct velocity/time graph:

Match the short story (or event) with the correct velocity/time graph:

Part 4: Acceleration

Which of the following would be a correct unit for acceleration?

An object moving with a constant acceleration is not increasing or decreasing its speed/velocity. (Explain if false, or rewrite the statement to make it true. Use the "Show your work" feature.)

Acceleration can best be described as a change in ________________.

Which scenario does NOT describe an example of acceleration?

Looking at the graphs above, which one shows an object increasing its speed/velocity?

Which graph best shows an object decreasing its speed/velocity and then quickly increasing its speed/velocity:

Part 5: Short Answer Questions

Look at the graph above and tell a story. Try to be specific to best demonstrate that you understand the graph and its details.

Given the force arrow diagram above, what is the net force? Are the forces here unbalanced or balanced? Will the velocity of the box change? Why? Be sure to answer all parts of this question for full credit.

Academic Honesty Statement

Given the force arrow diagram above, what is the net force? Are the forces here unbalanced or balanced? Will the velocity of the box change? Why?

Be sure to answer all parts of this question for full credit.

A vector describes a quantity's and .

Given the force arrow diagram above, what is the net force? Are the forces here unbalanced or balanced? Will the velocity of the box change? Why?

Be sure to answer all parts of this question for full credit.