Solar System and SGU

What part of the electromagnetic spectrum can humans see?

• Radio Waves

• Gamma Rays

• x-Rays

• Visible Light

What does the electromagnetic spectrum consist of?

• all the colors of light we can see

• the range of electromagnetic radiation that transfers energy through space

• a band of colors

• the distance between the crest of one wave and the crest of the next wave

Which of the following is NOT a characteristic used to classify stars>

• Distance
• Size
• Density
• Brightness

Cool stars are

• Blue
• Yellow
• Orange
• Red

The apparent change in position of an object when seen from different places is called

• Parallax

• Absolute Brightness

• Apparent Brightness

• A star

A star is born when

• a nebula expands
• helium and oxygen combine
• nuclear fusion starts
• a protostar cools

How long a star lives depends on 

• its temperature
• its absolute brightness
• its apparent brightness
• its mass

How bright a star actually is is called

• Apparent brightness

• Absolute brightness

A supernova is the explosion of a dying

• low-mass star

• medium-mass star

• high-mass star

• protostar

What is a major difference between elliptical and spiral galaxies?

• elliptical galaxies have no gas or dust between stars

• elliptical galaxies vary more in shape

• Spiral galaxies have no gas or dust between the stars

• spiral galaxies only contain old stars