Earth and space science unit 1

Our solar system is made up of eight planets. But what exactly is a planet?

• many stars held together

• a rock fragment in space

• a large object in space that revolves around a star in it's own right

• a large object in space that is composed of gases and gives off light

How do scientists classify galaxies?

• By size

• By color

• By shape

• By number of stars

• By the kind of food it serves

What type of galaxy is this?

• Elliptical

• Spiral

• Spinning

• Barred

What characteristic determines the color of a star?

• Size

• Temperature

• Number of stars

• Shape

What kind of galaxy is this?

• Barred

• Elliptical

• Spiral

• Big

Which of these options are REAL types of galaxies? Check all that apply.

• Spiral

• Blue

• Irregular

• Spinning

• Elliptical

The sun is a normal sized star, but it appears to be much bigger than the other stars we see. Why is this?

• The sun produces more light than other stars

• The sun is hotter than other stars

• The sun is affected by Earth's gravity

• The sun is closer than other stars

Which of the following planets have a large, solid core.

• Jupiter

• Mercury

• Saturn

• Neptune

Some galaxies have symmetrical shapes, others are not symmetrical, what term to astronomers use to describe a galaxy such as the one shown in the picture? (type your answer)

All visible stars in the night sky are much larger than Earth. What claim explains why we only see than as tiny points of light?

• They are very far away from Earth

• They are moving very fast

• The atmosphere blocks most of their light

• Because the stars are mean and they're messing with us.