50 Question Practice for 1st Semester Science Final Exam

Front

What happens when white light strikes a black object?

Back

No light is reflected.

Front

What process causes a sound wave to bounce back when produced near a large wall?

Back

Reflection.

Front

What is the magnitude of the single force acting on a cart if it moves as if acted on by a force of 50N?

Back

50N.

Front

What type of heat transfer occurs when you pick up a cup of hot coffee?

Back

Conduction.

Front

Why does Josh see lightning before he hears thunder during a storm?

Back

Light waves are electromagnetic waves that travel much faster than mechanical waves, such as the sound wave he heard as thunder.

Front

Define reflection in the context of waves.

Back

Reflection is the bouncing back of a wave when it hits a barrier.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

Explain the difference between light waves and sound waves.

Back

Light waves are electromagnetic and travel faster than sound waves, which are mechanical.

Front

What is the speed of light compared to the speed of sound?

Back

Light travels much faster than sound.

Front

What is the principle of superposition in wave interference?

Back

The principle states that when two or more waves overlap, the resulting wave is the sum of the individual waves.