Homework (universe, galaxy) 7 grade

What Galaxy is this?

• Solar Galaxy

• Milky Way galaxy

• Andromeda Galaxy

• Pinwheel Galaxy

The theory that the universe began as a point and has been expanding since is called the ___

• Point theory

• Big Bang theory

• Big Boom theory

• Universe theory

What shape is the Milky way?

• Elliptical

• Spiral

• Irregular

• Rectangular

Galaxy that does not have the clearly defined shape and structure.

• Irregular galaxy

• Galactic cluster

• Binary cluster

What is the force that holds a galaxy together?

• heat

• dark energy

• light

• gravity

What type of galaxy is this?

• Irregular

• Spiral

• Elliptical

• Regular

What color are the hottest stars?

• orange

• red

• blue

• green

In which list are celestial features correctly shown in order of increasing size?

• galaxy, solar system, universe, planet

• solar system, galaxy, planet, universe

• planet, solar system, galaxy, universe

• universe, galaxy, solar system, planet

A theory that says the universe began as a small point that expanded rapidly about 13.7 billion years ago.

• Big Bang theory

• Singularity theory

• Galaxy theory

• Nebula theory

A large grouping of stars, planets, gas, and dust in space held together by gravity.

• Universe

• Space

• Galaxy