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What is potential energy?

• The energy stored in an object due to its position.

• The energy that increases the temperature of an object.

• The energy that increases the mass of an object.

• The energy an object has due to its motion.

What is the formula for speed?

• distance x time

• force x time

• force/ distance

• distance/ time

A toy car travels 6 meters in 2 seconds, what is the speed of the toy car?

• 3 m/s

• .33 m/s

• 12 m/s

• 30 m/s

Adrian can change the height of the ramp by adding books under the piece of wood. He rolls a toy car down each ramp. Which ramp would cause Adrian's car to roll at the fastest speed?

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Arnold releases a marble at the top of a ramp. What force pulls the marble toward the bottom of the ramp?

• friction

• magnetism

• gravity

• electricity

Cheemu and Zeke are pulling on a rope during tug-o-war. Each boy is trying to pull the flag attached to the middle of the rope to his side. Predict what will happen if the boys pull with the force shown in the picture?

• The boy pulling with 16N of force will move the flag to his side.

• The forces will cancel each other out and the flag will not move.

• The boy pulling with 9N of force will move the flag to his side.

• Balance forces will not allow the flag to move.

Which student's statement best describes the movement of Earth's plates?

• Allison

• Ben

• Christy

• David

According to maps of the Earth, where do most earthquakes and volcanoes occur?

• in the center of continental plates

• along the boundaries of plates

• only on the plates under the ocean

• on the poles and equator

The tectonic plates slowly and continually move due to ________.

• the force of gravity.

• the flow of ocean currents.

• tectonic plates do not move.

• convection currents in the mantle.

The South American Plate is

• Plate A

• Plate B

• Plate C

• Plate D