Which investigation will BEST test the effects of gravity on moving objects?

• pencils falling from the same height

• balloons floating upward from the same height

• a bicycle speeding up on a flat surface

• a ball slowing down on a flat surface

Tags

NGSS.MS-PS2-2

Students rolled a 22-gram car down three different ramps. The results from the investigation are shown in the table.

Which statement BEST explains why the car rolled down the wood ramp the fastest?

• There was more force applied to the car on the wood ramp.

• There was less friction on the surface of the wood ramp.

• The wood ramp was higher than the other ramps.

• The car on the wood ramp had more mass.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

Brandon made a parachute for his action figure by taping a thin plastic sheet to pieces of string. Brandon tied the strings to the action figure. When he threw the action figure in the air, it fell back to the ground quickly.

What can Brandon do to make the action figure fall to the ground more slowly?

• use shorter pieces of string

• use a larger sheet of plastic

• add weights to the action figure

• throw the action figure higher into the air

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-2

Jan has two identical magnets on her metal cabinet. She hangs a drawing using Magnet 1. She tries to hang a calendar using Magnet 2, but the calendar falls to the floor.

Which BEST explains why Magnet 1 can hold up the drawing but Magnet 2 is unable to hold up the calendar?

• The area near Magnet 1 has extra metal.

• The calendar is longer than the drawing.

• The area under Magnet 2 has more gravity.

• The calendar has a greater mass than the drawing

Tags

NGSS.MS-PS2-2

A rocket is traveling toward space. What force must the rocket act against as it moves away from Earth?

• inertia

• gravity

• magnetism

• momentum

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Miguel sorted objects he wanted to recycle into two similar boxes. He filled Box 1 with empty bottles and Box 2 with newspapers. He pushed both boxes across the floor. Miguel used more force to push Box 2 than Box 1.

Which is the MOST likely reason Miguel used more force when he pushed Box 2?

• Box 2 was taller than Box 1.

• Box 2 was heavier than Box 1.

• Box 2 had stronger sides than Box 1.

• Box 2 contained more objects than Box 1.

Tags

NGSS.MS-PS2-2

Two people need to move a large, heavy box. One person pushes the box, while the other person pulls the box.

Which way of moving the box makes the work easiest for the people?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Tina washes her hands with a bar of soap. When she gets the soap wet, it becomes very slippery.

What force decreases as the soap becomes wet?

• electricity

• friction

• gravity

• magnetism

A ball rolled toward Manny while he was playing soccer.

If Manny’s foot kicks the ball as shown in the picture, which will MOST likely happen to the ball?

• The ball will stop rolling.

• The ball will roll toward the east.

• The ball will continue rolling west.

• The ball will go straight up in the air.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A student compares the amount of force used by his classmates to push a toy car down a ramp. What would be the BEST way to compare this force?

• Measure the distance each time the car comes to a stop.

• Measure the amount of time it takes the car to travel down the ramp.

• Measure the distance the car travels with each push.

• Measure the amount of time it takes for the car to come to a stop.

Tags

NGSS.MS-PS2-2