8th unit test review

Which is an example of a transverse wave?

• an ultrasound that transmits soundwaves

• a crowd doing the wave at a sporting event

• the waves formed by an earthquake

• the movement of a spring in a pogo stick

Answer explanation

Which statement can most likely be made about the shock waves of atomic bombs?

• They are a mechanical waves.

• They are an electromagnetic waves.

• They will act like x-rays.

• They will act like light rays.

Answer explanation

Which types of waves require matter to carry energy?

• electromagnetic waves only

• mechanical waves only

• electromagnetic and mechanical waves

• longitudinal and electromagnetic waves

Answer explanation

Which statement best describes how waves carry energy?

• Energy moves from one place to another through the wave.

• Energy increases as it moves through the wave.

• Energy is completely consumed by the beginning of the wave.

• Energy builds through the wave and is released at the end.

Answer explanation

What will most likely happen if a light wave moves through a solid?

• It will increase in wavelength.

• It will decrease in speed.

• It will increase in speed.

• It will decrease in wavelength.

Answer explanation

Which equation should be used to calculate the speed of a wave?

• speed = frequency x wavelength

• speed = frequency x hertz

• speed = period x wavelength

• speed = period x hertz

Answer explanation

Which refers to the number of wavelengths that pass a fixed point in a second?

• wavelength

• amplitude

• frequency

• compression

Answer explanation

Henri draws a wave that has a 4 cm distance between the midpoint and the trough. Geri draws a wave that has an 8 cm vertical distance from the trough to the crest.

Which statement best describes the energy in Henri and Geri’s waves?

• Henri’s wave has a higher amplitude and more energy.

• Henri’s wave and Geri’s wave have the same amplitude and the same energy.

• Henri’s wave and Geri’s wave have the same amplitude, but Geri’s has more energy

• Geri’s wave has a higher amplitude and more energy.

Answer explanation

What will occur when the trough of Wave A overlaps the crest of Wave B?

• Destructive interference will occur, causing the new wave to have more energy than Wave A or Wave B.

• Constructive interference will occur, causing the new wave to have more energy than Wave A or Wave B.

• Destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.

• Constructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.

Answer explanation

What is occurring when two waves traveling along the same medium meet and cancel each other out?

• destructive interference

• constructive interference

• reflection

• refraction

Answer explanation