Electromagnetic Radiation

A longitudinal's wave....

• moves at 90^o to the direction of travel
• moves in the same direction as travel
• doesn't move
• is a standing wave

Sound waves are 

• longitudinal
• trasnverse
• beach
• not really waves

Frequency is a measure of...

• length of the wave
• height of the wave
• number of waves a second
• number of waves an hour

A wave with a frequency of 20Hz and a wavelength of 30m is travelling at what speed?

• 600km/h
• 1.5m/s
• 50m/s
• 600m/s

Which of these has the lowest energy?

• X-rays
• Gamma rays
• microwaves
• radio waves

Which of these has the shortest wavelength?

• X-rays
• Gamma rays
• microwaves
• radio waves

Which of these has the highest energy?

• X-rays
• Gamma rays
• microwaves
• radio waves

Which of these has the highest frequency?

• X-rays
• Visible Light
• microwaves
• radio waves

Due to their temperature, humans primarily emit this type of EM Radiation.

• Visible Light
• Infrared
• Ultraviolet
• microwaves

If a wave's speed is 5m/s and it has a wavelength of 2.5m, what is it's frequency?

• 12.5Hz
• 2.5Hz
• 7.5Hz
• 2Hz