Science 7 Review

What type of wave is a sound wave?

• Transverse

• Longitudinal

• Surface

• Electromagnetic

Through which medium does sound travel the fastest?

• Air

• Water

• Steel

• Vacuum

What property of a sound wave determines how loud it is?

• Frequency

• Wavelength

• Amplitude

• Speed

What happens to the pitch of a sound when the frequency increases?

• The pitch gets lower

• The pitch stays the same

• The pitch gets higher

• The sound disappears

What unit is used to measure the frequency of a sound wave?

• Decibels

• Meters

• Hertz

• Watts

What type of wave is an electromagnetic wave?

• Longitudinal

• Sound wave

• Transverse

• Mechanical

Which electromagnetic waves can humans see?

• Infrared waves

• X-rays

• Visible light

• Microwaves

Which electromagnetic wave has the shortest wavelength and the highest energy?

• Gamma rays

• Radio waves

• Infrared waves

• Ultraviolet rays

Which type of electromagnetic wave is commonly used in microwave ovens?

• Gamma rays

• Ultraviolet rays

• Microwaves

• Infrared waves

What part of the electromagnetic spectrum is used in X-ray machines to see bones?

• Infrared rays

• Gamma rays

• X-rays

• Radio waves