The function of some tools that are used to separate mixtures are shown in the table below.
Name the tool that is described by its function.
Drag the tool that best matches the function.
Other Answer Choices:
Magnet
Filter
Hot Plate
Strainer
Question 2
2.
A student is investigating how the height from which a marble is dropped into a pan of flour affects the depth of the resulting crater.
What are the independent variable, dependent variable, and controlled variables in the experiment?
Drag the objects that best matches their definition for this problem.
Other Answer Choices:
Amount of flour in pan
Marble
Height from which the marble is dropped
Depth of the resulting crater
Question 3
3.
A child plays with a soccer ball at a park.
At which positions will a push force be needed? Select TWO correct answers.
Question 4
4.
A student combined two mystery substances in a beaker. The physical properties of each substance changed.
What type of combination was formed, a mixture or a solution? __________
Why did you choose the answer above? __________
Question 5
5.
Question 6
6.
1
5.7.B
1
5.7.B
1
5.7.B
3
5.7.B
1
5.7.B
How can a combination of sand, salt, and iron filings be separated?
Use a sieve to separate the sand, then use a magnet to remove the iron filings, and finally evaporate the water to get the salt.
Use a magnet to remove the iron filings, then use a sieve to separate the sand, and finally evaporate the water to get the salt.
Use a magnet to remove the iron filings, then add water to dissolve the salt, and finally filter out the sand.
A student mixes sugar and tea into water.
What properties of the water will change? Select all that are true.
color
density
taste
temperature
A student released a toy car from the top of a ramp and measured the distance the toy car traveled. The student then released the same toy car from the middle of the ramp and measured the distance the toy car traveled.
Question 7
7.
Question 8
8.
Question 9
9.
Question 10
10.
Question 11
11.
What force causes the toy car to move down the ramp?
Mechanical energy from the wheels turning.
Friction turning the wheels.
A push from the student.
Gravity pulling the car down the ramp.
What is the independent variable in this experiment?
The toy car
The distance the car traveled
Gravity
Starting point
What is the dependent variable in this experiment?
The distance the car traveled
Gravity
The toy car
The starting point
What are the controlled variables in this experiment?
The toy car
The starting point
Gravity
The ramp angle
The distance the car traveled
What question are students most likely trying to answer by conducting this experiment?
Does the starting height of a toy car rolling down a ramp affect the distance the toy car travels?
Does the starting height of a toy car rolling down a ramp affect the speed the toy car travels?
Does the material of the ramp affect the distance a toy car travels?
Does the toy car travel faster or slower depending on the starting height?