4th 6 Weeks Exam Review

If I want to completely cancel out ALL noise, what type of interference do I need?

• completely constructive interference

• partially constructive interference

• completely destructive interference

• partially destructive interference

Which is a PHYSICAL demonstration of a transverse wave?

• a clock chime

• string vibrating

• a slinky being pushed back and forth

• marbles rolling down the stairs

Why do we hear the thunder after we see the flash of lightning?

• Lightning is farther away

• Thunder and lighting travel at the same speed

• light can travel through the rain but sound can not

• light waves travel faster than sound

Whish does NOT apply to sound waves?

• reflection

• refraction

• diffraction

• polarization

On Doppler Radar if the reading from a storm are higher than the original frequencies transmitted, what can you conclude?

• the storm is moving toward the radar transmitter

• the storm is moving away from the radar transmitter

What wave property is increasing from figure 1 to figure 2?

• amplitude

• frequency

• period

• wavelength

Studies of Dopplershifted light from stars generally indicate a greater red shift (longer wavelengths) from stars that are farther away. Which statement represents a valid conclusion from this information?

• Distance stars are NOT moving.

• Distant stars are moving away from us faster than close stars.

• Distant stars are older, accounting for the longer wavelengths

• Stars moving toward us are moving faster than stars moving away.

What is the speed of a wave that has a wavelength of 2.0m and a frequency of 3.0 Hz?

• 1m/s

• 5m/s

• 6m/s

• 15m/s

As the temperature of a gas in an enclosed container increases, the pressure of the gas also increases. Why?

• kinetic energy decreases and the momentum increases

• the kinetic energy of the gas particles increases and they hit the container wall with greater speed

• the temperature increases the gravitational potential energy of the gas

• the temperature increase causes an increase in specific heat which leads to a higher pressure

copper is a metal. It is good at what?

• conduction

• convection

• radiation

• reduction