Force Staar Review

Students drop the same heavy ball onto identical blocks of soft clay from different heights. For each height they measure the depth of the dent the ball makes in the clay. Why is the depth different in each trial?

• The size of the ball changes.

• The material of the ball changes.

• The mass of the ball when it hits the clay changes.

• The force of the ball when it hits the clay changes.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

To move the wagon towards the door, it should be pushed in the direction indicated by which arrow?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-2

Which actions will make moving the cart in one direction easiest for the students?

• Student 1 pulls the cart to the left. Student 2 pulls the cart to the right.

• Student 1 pulls the cart to the left. Student 2 pushes the cart to the left.

• Student 1 pushes the cart to the right. Student 2 pushes the cart down.

• Student 1 pushes the cart to the right. Student 2 pulls the cart up.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Students design an experiment to determine how much force is needed to move blocks of wood of different masses slowly across a lab table. Which procedure should students include in their design?

• Conduct five trials, using a different scale to pull each block of wood.

• Conduct five trials, pulling a different side of each block each time

• Conduct five trials, using a different table for each trial

• Conduct five trials, pulling each block of wood in the same way for each trial

Tags

NGSS.MS-PS2-2

The diagrams show two trials of an experiment in which a spring scale was used to measure force. This experiment can be used to determine —

• how mass affects the force needed to move objects

• how force affects the mass of two objects

• how the force used to pull a dictionary affects the mass of a box of marbles

• how the mass of a box of marbles affects the mass of a dictionary

Tags

NGSS.MS-PS2-2

The diagram below shows a view of a ball from above a table. The ball is rolling across the table. A student lightly taps the rolling ball in the direction shown below.In which direction does the ball most likely move after the student taps the ball?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

James has decided to investigate whether the number of flowers on a plant will

increase if the amount of water supplied to the plant is increased. James has four

pots of roses to use during his experiment.

What is the variable (independent variable) in this experiment?

• The temperature of the water

• The number of hours in sunlight

• The age of the seeds

• The amount of water

Tags

NGSS.MS-LS2-1

What force is being tested when an object is forced downward toward the center of the Earth?

• Gravity

• Air pressure

• Magnetism

• Friction

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Play media comment. A student uses a spring scale to pull a 50 gram block across a wood desk. Then the student pulls the block the same distance across surfaces of carpet, sandpaper, and glass. Which question is this investigation most likely designed to answer?

• How do blocks of different sizes react to force?

• How do different surfaces affect the amount of force needed to move a block?

• How do blocks affect spring scales?

• How does the mass of a block change when it is pulled across a desk?

Tags

NGSS.MS-PS2-2

Some students wanted to find out if a tennis ball and a baseball dropped from the

same height hit the ground at the same time. This investigation tests the effect of

which of the following?

• Wind

• Friction

• Gravity

• Magnetism

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4