Semester 2 quizizz

What is the amplitude of a wave?

• The vertical distance between a peak or valley

• The speed of the wave
• How loud the wave is

• The distance from compression to compression or rarefaction to rarefaction

Fill in the blank

Magnets always attract at _______ poles.

Jeff thinks a magnet has a magnetic field.

Sarah does not think a magnet has a magnetic field.

Who is correct?

• Jeff

• Sarah

What is the Doppler effect?

• The Doppler effect is the apparent change in frequency as a wave source moves in relation to the listener.

• The Doppler effect is the rate in which a car is moving in a direction.

• The Doppler effect is a person running will hear sound louder than a person that is walking.

• The Doppler effect is the change in temperature of a wave in relation to an observer who is stationary relative to the wave source.

Friction is

• Friction is the invisible force that slows moving objects down when they rub on something.

• Friction is the force that causes objects to float.
• Friction is the force that attracts objects.
• Friction is the force that accelerates motion.

We use Newton's third law of motion in our everyday life but what is the best way to describe it?

• For every action, there is an equal and opposite reaction.
• Newton's third law states that action and reaction are not related.
• Newton's third law states that an object will keep doing what it's doing until an unbalanced force stops what it is doing.

• For every action, there is an unequal and opposite reaction.

Sir Isaac Newton created the ____________ and he also discovered _________.

• theory of relativity, electricity

• principles of aerodynamics, nuclear fusion
• laws of motion, gravity

• laws of attraction, magnetism

What is energy?

• Energy is the ability to slow down time.
• Energy is a light, sound, hear, or electricity.

• Energy is the ability to create matter.
• Energy is the ability to change color.

What does Label #1 show?

• Trough

• Crest

• Amplitude

• Wavelength

Which of the following is a longitudinal wave?

• Light wave

• Sound wave

• Water wave

• Radio wave