Light Years and Star Size

Galaxies and Light Years

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Multiple Choice

Which of these best compares the conditions at Location X and Location Y?

• It is day at Location X and night at Location Y.

• It is winter at Location X and summer at Location Y

• There are more hours of daylight at Location X than at Location Y.

• The moon is brighter when viewed from Location X than

  when viewed from Location Y.

Multiple Choice

What is the largest?

• Star

• Earth

• Nebula

• Galaxy

Multiple Choice

Billions of stars are held together in groups called __________.

• galaxies

• solar systems

• planets

• comets

Multiple Choice

Galaxies are composed of.....

• stars

• stars and gas

• stars, dust, and gas

• stars, dust, and gas held together by gravity

Multiple Choice

What is not a galaxy?

• Optical Galaxy

• Spiral Galaxy

• Elliptical Galaxy

• Irregular Galaxy

Multiple Choice

All stars start as gas and dust in a(n)

• nebula

• black hole

• red giant

• black dwarf

Open Ended

Which would be larger, Star or Nebula. Why?

Multiple Choice

After the main sequence, an average star becomes a

• black dwarf

• protostar

• red giant

• supergiant

Multiple Choice

After the main sequence, a massive star becomes a

• black dwarf

• protostar

• red giant

• supergiant

Multiple Choice

Which are the largest stars?

• White Dwarf

• Main Sequence

• Super Giant

• Giant

Open Ended

What is a measurement of distance?

Open Ended

If you run 5 mph for 2 hours what is the distance of your run?

Open Ended

If you drive 3 hours going 100 mph, what is the distance you have traveled?

Open Ended

The continental plates of the earth move due to the convection currents of the mantle. Each plate moves 3.5 inches per year. How far will the North American plate move in 2 years?

Speed of light = Speed

Time = Years

Light Years = Distance

Multiple Choice

Light years are a measure of

• time

• speed

• distance

• light

Multiple Choice

A light year is...

• The speed light travels

• How long it takes light to get to you from the sun

• The distance light can travel in a year

• How many years it takes light to be emitted