Staar Review Science Force and Motion

Students use a spring scale to pull different types of shoes across a wood table and record the amount of force required. Which question is this experimental investigation most likely trying to answer?

• A. How much do the different types of shoes weigh?

• B. How does the type of shoe affect the amount of force required to pull it?

• C. How does a spring scale work?

• D. How much force is required to pull the high heel shoe?

Tags

NGSS.MS-PS2-2

Based on the picture above, what should be done to improve this experimental investigation?

• A. The ramps should all be the same height.

• B. The ramps should be made of different materials.

• C. The same car should be used on both ramps.

• D. The experimental design is correct the way it is.

Tags

NGSS.MS-PS2-2

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Why is it important to conduct multiple trials in a simple experimental investigation?

• A. Repeated investigations make the results more reliable.

• B. Repeated investigations make the results less reliable.

• C. Repeated investigations make the results more realistic.

• D. Repeated investigations make the results correct.

Tags

NGSS.MS-PS2-2

The diagram above shows four identical boxes filled with different materials that need to be pushed across the room. Equal force is applied to each box for 15 seconds. Which box will move the farthest after 15 seconds?

• A. Box 1

• B. Box 2

• C. Box 3

• D. Box 4

Tags

NGSS.MS-PS2-2

Why do the above boxes move different distances when pushed with the same amount of force?

• A. Lighter objects have increased friction with the floor.

• B. Heavier objects have increased friction with the floor.

• C. Smooth objects have more friction with the floor.

• D. Rough objects have more friction with the floor.

Tags

NGSS.MS-PS2-2

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Friction is the force between two objects when they come into contact with each other. More friction occurs when an object rubs or move against a _________________________ surface.

• A. Smooth

• B. Rough

• C. Shiny

• D. Flat

The surface of the Moon contains soft dirt. Which object will most likely create a deeper crater when the object strikes the ground?

• A. The bowling ball will make a deeper crater.

• B. The tennis ball will make a deeper crater.

• C. Both craters will be the same depth.

• D. The objects will not make a crater.

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When designing a simple experimental investigation that tests the effect of force on an object, why is it important to test one variable at a time?

• A. It would be impossible to test two variables during an experiment involving force.

• B. It allows the experimenter to correctly and more easily interpret the results of the experiment.

• C. It allows the experimenter to formulate a hypothesis both before and after the experiment.

• D. It is not important to test only one variable at a time.

Tags

NGSS.MS-PS2-2

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The cyclist is position 4 stops pedaling, but continues to roll down the hill. Which force is pulling the bicycle and rider down the hill?

• A. Friction

• B. Inertia

• C. Gravity

• D. Momentum

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NGSS.MS-PS2-4

Students use a fan to move paper boats of different masses across a table. The experimental set-up is shown in the diagram below. Which question is the students most likely trying to answer with this experimental investigation?

• A. How far does Boat 1 move when the fan is turned on?

• B. How does the size of a paper boat affect the distance it travels when a constant force is applied?

• C. Can a fan blow a paper boat across the table?

• D. How does the mass of a paper boat affect the distance it travels when a constant force is applied?

Tags

NGSS.MS-PS2-2