Physical Science

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the SI unit for measuring speed?

Back

The SI unit for measuring speed is meters per second (m/s).

Front

How do you calculate velocity?

Back

Velocity is calculated by dividing the distance traveled by the time taken, and it includes a direction (e.g., 10 km/hr south).

Front

What type of energy is stored in food?

Back

Chemical energy.

Front

What happens to kinetic energy as an object slows down?

Back

As an object slows down, its kinetic energy decreases.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What are the forms of energy transformation when lighting a match?

Back

The energy transformations are: chemical energy (in the match) → thermal energy (heat) + light energy.

Front

Where is kinetic energy the greatest on a slide?

Back

Kinetic energy is greatest at the bottom of the slide.

Front

What is the formula for calculating kinetic energy?

Back

Kinetic energy (KE) = 1/2 mv², where m is mass and v is velocity.