Otto pushed a toy car across a floor. 2324 Force Motion Review

Otto pushed a toy car across a floor. The car traveled fast across the wood, but it slowed to a stop on the carpet. Which BEST explains what happened when the car reached the carpet?

• Inertia decreased

• Gravity increased

• Friction increased

• Magnetism decreased

Tags

NGSS.3-PS2-1

Which is a force that keeps Earth in orbit around the Sun?

• friction

• gravity

• radiation

• magnetism

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

What keeps Earth in orbit around the Sun?

• the inertia of the Moon

• the location of Earth's orbit

• the speed of Earth's rotation

• the Sun's gravitational pull

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

Hilda rolled a ball across four different surfaces. She rolled the ball with the same amount of force each time. She recorded the time it took for the ball to stop in the chart. Why did the ball roll across the concrete for the longest time?

• because the concrete is rougher than the others

• because concrete gets hotter than the others

• because concrete is smoother than the others

• because concrete looks darker than the others

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

A weight, suspended from a pole, is held in place as shown. When the weight is released, it moves in the direction shown. Which of these would cause the weight to move in this direction?

• electric force

• magnetic force

• friction

• gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Jason plays a game with a tower of blocks. Jason removes as many blocks as he can from the middle of the tower while it remains standing. The picture shows the tower at the different times during the game. Which BEST explains why the tower remains standing with blocks missing?

• friction

• gravity

• magnetism

• balanced forces

The force necessary to keep planets in orbit around the Sun is

• gravity

• friction

• magnetism

• nuclear

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

The Great Smoky Mountain Railroad travels 26 km between Bryson City and Dillsboro. The trip takes 50 minutes. How fast is the train moving?

• .52 km/min

• 1.9 km/min

• 24 km/min

• 76 km/min

A model car travels 20 meters in 15 seconds. How many meters will it travel in 45 seconds?

• .4 m

• 25m

• 30m

• 60m

If a ball rolls from point A to point B, in what direction is it rolling?

• northward

• eastward

• southward

• westward