Understanding Forces and Energy

Which of the following is a example of a rigid object?

• Clay

• Metal rod

• Rubber band

• Sponge

Which material is most likely to bend without breaking?

• Glass

• Wood

• Rubber

• Brick

What type of change occurs when you push or squeeze clay?

• No change

• Temporary shape change.

• Permanent shape change

• It breaks into pieces.

What is NOT an example of using force to move an object?

• Folding paper

• Bouncing a rubber ball

• Heating metal

• Stretching a rubber band

If a metal rod bends and does not return to its original shape, it has undergone a:

• Reversible change

• Permanent change

• Flexible change

• No change

Which of the following tools can be used to measure distance?

• Ruler

• Thermometer

• Stopwatch

• Scale

Which one of the units is often measured for speed?

• Meters per second (m/s)

• Kilograms per second (kg/s)

• Liters per second (L/s)

• Degrees per second (°/s)

Which factor affects the speed of a moving object?

• Shape of the object

• Distance covered

• Color of the object

• Weight of the object

If an object travels 100 meters in 20 seconds, what is its speed?

• 5 meters per second

• 10 meters per second

• 20 meters per second

• 50 meters per second

A car covers a distance of 60 km in 2 hours. Determine its average speed?

• 20 kilometers per hour

• 30 kilometers per hour

• 40 kilometers per hour

• 60 kilometers per hour