AAP Physical Science Semester 1 Pre-assessment

Front

What is an electromagnetic wave?

Back

A wave that can travel through matter and empty space (vacuum), such as light waves.

Front

Who experiences a higher pitched sound when a sound source moves towards an observer?

Back

The observer closer to the sound source experiences a higher pitched sound due to the Doppler effect.

Front

What does a graph representing zero acceleration indicate?

Back

It indicates constant velocity, meaning the object's speed and direction are not changing.

Front

What is the energy conversion process in a battery-powered flashlight?

Back

Chemical energy is converted to electrical energy, which is then converted to radiant energy (light).

Front

How do you calculate kinetic energy?

Back

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

Front

What is the formula for calculating speed?

Back

Speed = Distance / Time.

Front

What is the difference between a transverse wave and a longitudinal wave?

Back

In a transverse wave, the particle displacement is perpendicular to the direction of wave propagation, while in a longitudinal wave, the displacement is parallel to the direction of wave propagation.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed; it can only be transformed from one form to another.

Front

What is potential energy?

Back

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

Front

What is the relationship between mass and kinetic energy?

Back

Kinetic energy is directly proportional to the mass of the object; as mass increases, kinetic energy increases.