Astronomy

What theory states that at one time, the entire universe was confined to a dense, hot, super mass ball?

• Nebular Theory

• Identity Status Theory

• Theory of Relativity

• Big Bang Theory

What is the force that keeps the planets from going out into space in a straight line?

• Rotation

• Revolution

• Nutation

• Gravity

The second planet of the Solar System is...

• Venus

• Mercury

• Mars

What Galaxy does Earth reside in?

• Andromeda Galaxy

• Elliptical Galaxy

• Milky Way Galaxy

• Spiral Galaxy

Which two element make up most of the sun?

• helium and hydrogen

• ammonia and methane

• hydrogen and oxygen

• oxygen and helium

The fifth planet of the Solar System is...

• Saturn
• Jupiter
• Uranus

What is the shape of Earth's orbit?

• Circular

• Oval

• Ellipse

• Diamond

One of the main differences between the outer and inner planets is __________.

• The inner planets all have water
• the inner planets are much bigger than the outer planets
• the outer planets are gas planets
• the outer planets have rings, and the inner planets don't

The biggest planet of the Solar System is...

• Saturn
• Uranus
• Jupiter

A small chunk of ice and dust that revolves around the Sun is a ____.

• comet
• asteroid
• meteor
• meteorite