Chapter 2 -Astronomy

What are the Inner Planets called?

• Gas Giants

• Terrestrial Planets

• Rock Planets

• Little Planets

A sun-centered system of planets developed by Copernicus is a ____ model?

• geocentric

• inertia

• heliocentric

Which planet is covered with 70% water?

• Mercury

• Venus

• Earth

• Mars

Kepler discovered that the orbit of each planet is an ____ rather than a circle.

• ellipse

• oval

• triangular

• sphere

Which inner planet rotates backwards compared to all other planets?

• Venus

• Mars

• Jupiter

• Saturn

The sun's energy comes from?

• nuclear sun

• nuclear fission

• nuclear fusion

• heat

A stream of particles produced by the corona is?

• solar wind

• core

• chromosphere

• sunspot

Which planet is closest to the sun?

• Earth

• Pluto

• Mars

• Mercury

When carbon dioxide traps the sun's heat causing surface temperatures to rise it is called?

• greenhouse effect

• solar power

• sun power

• sun effect

Who is known as the red planet?

• Mars

• Mercury

• Sun

• Moon