Chapter 10: Solar System

Which kind of light rays cause Earth to get the warmest?

• bent light rays
• curved light rays
• slanted light rays
• straight light rays

Which of these is at the center of the solar system?

• Moon
• Earth
• Sun
• orbit

Which is true of the inner planets?

• made of gases
• farther from the sun
• smaller planets
• made of rock

Which is NOT true of the inner planets?

• rocky surfaces
• made mostly of gases
• warmer than outer
• smaller than outer

In which way are Earth and Mars alike?

• have watery surfaces
• same length of day
• same length of year
• both have humans

About how long is a lunar cycle?

• 7 days
• 29 days
• 35 days
• 365 days

Which is an inner planet?

• Earth
• Saturn
• Neptune
• Uranus

the imaginary line that Earth rotates around

• revolution
• axis
• orbit
• lunar cycle

pattern of phases of the moon

• lunar cycle
• constellation
• revolution
• rotation 

the sun and the planets and other objects circling it

• lunar cycle
• orbit
• solar system
• sun