Grade 8 Science Examination Questions

What type of wave is a sound wave?

• Transverse wave

• Longitudinal wave

• Surface wave

• Electromagnetic wave

Which medium allows sound to travel fastest?

• Air

• Water

• Vacuum

• Steel

What kind of wave does not require a medium to travel?

• Sound wave

• Water wave

• Seismic wave

• Light wave

The distance between two corresponding points on adjacent waves is called:

• Frequency

• Wavelength

• Amplitude

• Speed

The height of a wave from its rest position to the crest is called:

• Frequency

• Wavelength

• Amplitude

• Velocity

What part of the wave determines its loudness in sound waves?

• Wavelength

• Frequency

• Amplitude

• Speed

Which of the following is a property of light?

• It needs a medium to travel

• It is a longitudinal wave

• It can travel through vacuum

• It is slower than sound

When light bends as it passes from one medium to another, it is called:

• Reflection

• Absorption

• Diffraction

• Refraction

What happens to light when it hits a smooth, shiny surface?

• It bends

• It slows down

• It reflects

• It gets absorbed

What color of light has the highest frequency?

• Red

• Yellow

• Green

• Violet