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Biblioteka

8th Grade S1 Final Exam

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Posljednje ažuriranje 5 months ago
51
Unit 1: Nature of Science & Engineering
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Unit 2: Earth Science
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8.ESS.1
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8.ESS.1
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Unit 3: Substances & Chemical Reactions
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8.PS.7
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Unit 4: Resources & Thermal Energy
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Bonus Essay!
0
Pitanje 1
1.

Which best describes "pseudoscience" and gives an example of it?

Pitanje 2
2.

A scientific law...

Pitanje 3
3.

A scientific theory...

Pitanje 4
4.

If someone collects the temperature of a beaker of water at room temperature (about 20oC) five times and gets the following data, their data would be best described as...

20.2oC, 23oC, 18oC, 20.3oC

Pitanje 5
5.

If someone collects the temperature of a beaker of water at room temperature (about 20oC) five times and gets the following data, their data would be best described as...

10.2oC, 10.1oC, 10.2oC, 10.0oC

Pitanje 6
6.

Empirical Evidence is just another word for...

Pitanje 7
7.

"The ceiling in my house is dripping water. It is also raining outside."

Which option is NOT a valid inference based on the observations above?

The following is a description of an engineering project:

A student sets out to build a robot. This robot has to use a certain brand of pieces, cannot be longer than 19", wider than 11", or taller than 15", and cannot use more than 6 motors. The goal is to make the robot able to pick up a 3"x3" cube and score it into a goal area, preferably quickly.

2
Pitanje 8
8.

Which would be a "criteria" of this design?

2
2
2
Pitanje 12
12.

Greenhouse gases, such as CO2, H2O, SO2, and NO2, ...

Pitanje 13
13.
Pitanje 14
14.

Which best describes the main cause(s) of global climate change?

Pitanje 15
15.

Drag and drop the various steps of the water cycle to their appropriate boxes.

Drugi mogući odgovor:
precipitation
run-off
condensation
transpiration
evaporation
infiltration
Pitanje 16
16.

Which of the following helps water to precipitate and is considered one of two things to power the water cycle?

Pitanje 17
17.

Which of the following helps water to evaporate and is considered one of two things to power the water cycle?

Pitanje 18
18.

The main cause of air pollution is...

Pitanje 19
19.

The main cause of water pollution is...

Pitanje 20
20.

The main cause of land pollution is...

Pitanje 21
21.

Greenhouse gases are called greenhouse gases because...

Pitanje 22
22.

Climate Zones are determined by...

Pitanje 23
23.

Sub-climates within a climate zone are determined by...

Pitanje 24
24.

When two air masses run into each other, weird weather can occur (tornadoes, thunderstorms, etc.). What do we call it when two air masses run into each other?

Pitanje 25
25.
Pitanje 26
26.
Pitanje 27
27.
Pitanje 28
28.

On the periodic table, the elements are organized by increasing

Pitanje 29
29.
Pitanje 30
30.

The atomic number always equals

Pitanje 31
31.

The charge of an ion (charged atom) is always equal to

Pitanje 32
32.

The mass number is always equal to

Pitanje 33
33.
Drugi mogući odgovor:
+1
-1
7
Be
0
4
9
3
Li
Pitanje 34
34.
Pitanje 35
35.

According to the Law of Conservation of Mass...(Select all that apply)

Pitanje 36
36.
Pitanje 37
37.
Pitanje 38
38.

Which of the following is NOT an indicator that a chemical change likely occurred?

Pitanje 39
39.

A synthetic material is...

Pitanje 40
40.

A synthetic materials are made from...

Pitanje 41
41.

Why are synthetic materials made?

Pitanje 42
42.

The structure of a synthetic material describes its...

Pitanje 43
43.

The function of a synthetic material describes its...

Pitanje 44
44.

In creating synthetic materials, we sometimes hurt the Earth by...

Pitanje 45
45.

When a substance increases in temperature, its particles...

Pitanje 46
46.

Which state change does not involve an increase in thermal energy?

Pitanje 47
47.

When a chemical reaction releases energy, its surroundings

Pitanje 48
48.

When a chemical reaction causes its surroundings to become colder, it...

Pitanje 49
49.

If you discover a chemical reaction that makes its surroundings warmer, what's one way you can increase the amount of heat it gives off?

Pitanje 50
50.

Substances exist as solids, liquids, or gases due to their...

Pitanje 51
51.

Bonus Essay! For bonus points, write 4-6 complete sentences responding to one of the following prompts:

A: Describe the difference between a Scientific Law and a Scientific Theory. Explain which one can change and why! It might help to even use examples of some scientific (theories or laws) that have changed over time, to illustrate how that works!

B: What is climate change, what causes it, and how can we fix it?

C: Describe the parts of a chemical equation (products, reactants, coefficients, etc), what it represents, and why we never change subscripts while balancing equations.

Pitanje 9
9.

Which would be a "constraint" of this design?

Pitanje 10
10.

The student comes up with the following 4 designs. Which would be best?

Pitanje 11
11.

The student choses the following design:

A robot that uses 7 motors, moves at 1mph, and can pick up 1 cube at a time.

Which of the following sets of changes would most improve upon the student's design, allowing it to fit within its criteria and constraints?