Force, Motion, and Energy Checkpoint Key

What type of force is being illustrated?

• balanced force

• unbalanced force

Identify the forms of energy being used in this picture.

• Electrical energy
• Nuclear energy
• Kinetic energy
• Thermal energy

On a steep hill, what could provide friction to a bike?

• letting the bike coast down

• icy surface on the hill

• turning the pedals faster

• applying the brakes

What type of force is shown in the picture?

• Push

• Pull

Identify the following as examples of gravity, friction, or magnetism.

Sliding across the floor in your socks.

• Gravity

• Friction

• Magnetism

• Inertia

Identify the following as examples of gravity, friction, or magnetism.

Falling out of bed.

• Gravity

• Friction

• Magnetism

• None of the above

Identify the forms of energy being used in this picture.

• Electrical
• Light

• Thermal

• Sound

Identify the form of energy being used in this picture.

• Sound

• Light

• Thermal

• Nuclear

• Kinetic

What would happen if there was no friction at all?

• We would move faster

• We could not stop moving easily

• Everything would be very heavy

• We would not need energy to move

Identify the following pictures as examples of reflection or refraction.

• Reflection

• Refraction

• Diffraction

• Absorption