Review: Universe Unit 2/9

What are electromagnetic waves?

• sound waves
• electric & magnetic fields that travel through space very quickly
• ocean waves
• things like longitudinal waves

A wave with a large wavelength will have a ______ frequency and _____ energy

• high, low
• high, high
• low, high
• low, low

Which has the LONGEST wavelength and, therefore, the lowest frequency/energy

• Gamma Rays
• Radio Waves
• Visible Light
• Infrared rays

Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy

• Radio waves
• Ultraviolet Rays
• Gamma Rays
• X-rays

Which section of the spectrum is the ONLY one we can see?

• X-rays
• Visible Light
• Gamma Rays
• Ultraviolet Rays

The blue section of the wave is measuring _________________.

• wavelength
• crest
• trough
• amplitude 

The higher the frequency the ______ the energy. 

• higher
• lower
• neither, stays the same

What type of galaxy is this?

• Spiral
• Elliptical
• Irregular 
• Irrational

What type of galaxy has no defined pattern or shape?

• Spiral 
• Elliptical
• Irregular
• Constellation

The type of galaxy that is composed of the older stars and low-mass stars.

• Spiral
• Elliptical
• Irregular
• Constellation