Class8 : chapter:16 "The Universe" - class test

This is a large collection of stars, gas, and dust that is held together by gravity.

• Galaxy
• Spiral Arms
• Earth
• Star

What is a light year?

• The distance that light travels in 10 seconds
• The time it takes light to travel to the moon
• The distance that light travels in 1 year
• The distance around the Earth

What galaxy do you live in?

• Earth
• Andromeda
• Hersey
• Milky Way

What type of galaxy is the Milky Way?

• Spiral
• Elliptical
• Irregular
• Halo

A cloud of gas and dust that looks like dark luminous matter.

• Astroid
• Moon
• Energy
• Nebula

The average distance between the earth and the sun.

• Lightyear
• astronomical unit
• kilometers
• parsec

Venus appears very bright in the night sky because it ...

• is the largest planet.
• is the closest planet to Earth.
• has a gravitational field.
• has a high surface temperature.

What is the main difference between an asteroid and a meteoroid?

• their effect on Earth
• the size of the body
• their density
• the shape of the orbits

Where would scientists find a meteoroid?

• Space
• Earth's Atmosphere
• Earth's surface
• None of these

What constellation is this?

• Pegasus
• Andromeda
• Hercules
• Cassiopeia