The Universe

Which of the following is hottest? 

• a red giant superstar
• a small, white dwarf
• a main-sequence yellow star
• a main-sequence blue star

Which component from the table above is MOST likely a galaxy?

• Component 1
• Component 2
• Component 3
• Component 4

Which component from the table above is MOST likely a solar system?

• Component 4
• Component 2
• Component 1
• Component 3

What is the most useful unit for measuring distances within the solar system?

• the kilometer
• the astronomical unit
• the light-year
• he 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

Where would scientists find a meteorite?

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

Scientists think the Milky Way probably is

• a nebula
• a spiral galaxy
• an elliptical galaxy
• an irregular galaxy

Which of the following stars would be seen as the brightest star?

• Alpheratz, which has an apparent magnitude of 2
• Alcyone, which has an apparent magnitude of 3
• Deneb, which has an apparent magnitude of 1
• Sirius, which has an apparent magnitude of -1