Final Review

Front

What happens to molecules as an object absorbs thermal energy?

Back

They move faster.

Front

What is the total distance traveled if Mike drove 80 km west and then 100 km east?

Back

180 km.

Front

What is the correct name for the compound Fe₂O₃?

Back

Iron(III) oxide.

Front

How much work is done when a person pushes a 10 kg box with a force of 50 N over a distance of 5 m?

Back

250 J.

Front

What energy transformation occurs when a flashlight is turned on?

Back

Electrical energy → Light energy + Heat energy.

Front

Define thermal energy.

Back

The internal energy present in a system due to its temperature.

Front

What is the formula for calculating work done?

Back

Work = Force × Distance.

Front

What is the difference between distance and displacement?

Back

Distance is the total path length traveled, while displacement is the shortest distance from the initial to the final position.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

Define kinetic energy.

Back

The energy possessed by an object due to its motion, calculated as KE = 1/2 mv².