Astrophysics

THE EARTH

How does the earth rotate around the sun

• in an elliptical orbit

• in a cirle

• doesnt move

The earth's axis is tilted at an angle of

• approximately 30 degrees from vertical

• 23.5 degrees horizontal

stars form from huge clouds of gas and space called:

• nebulae

• supernova

• the Kuiper belt

• protostar

Which planets are classified as gas giants

• Venus

• Uranus

• Saturn

• The sun

• Mercury

The tides are caused by the pull of what

• The sun

• The moon

• Mt Everest

• The black hole at the center of the galaxy

What term is used to describe the death of a massive star?

• Red Giant Storm

• Supernova

• Protostar

How does the mass of a hot, bright main sequence star compare to a cool, faint main sequence star?

• They have more mass

• They have the same mass

• They have less mass

In the EM spectrum, ________ is shorter on the right than on the left.

• Frequency
• Hertz
• Amplitude
• Wavelength

Cell phones use_____________waves.

• Microwaves
• Gamma
• XRays
• Radio 

Use the image to identify the motion of the object relative to Earth.  Compare the absorption spectra of the star to what the star would look like if it were not moving at all relative to Earth.

• It is not moving
• It is moving away from Earth (Redshift)
• It is moving towards Earth (Blueshift)
• It is moving towards Earth (Redshift)