Solar System

The four inner planets are...

• Rocky and small
• Very large and made of ice
• Small and made of ice
• Very large and made of gases

The outer planets are...

• Rocky and small
• Very large and made of ice
• Small and made of ice
• Very large and made of gases

Which two planets are out of order in this list of our solar system?
Mercury-Earth-Venus-Mars-Jupiter-Saturn-Uranus-Neptune-Pluto.

• Mercury and Earth
• Earth and Venus
• Saturn and Jupiter
• Uranus and Neptune

How does a telescope help us understand the moon?

• It tells us how it was formed
• It tells us how hot it is there
• It helps us see surface features
• It can tell us what the moon is made of

Why is space travel difficult for people?

• We cannot take the air or food we need into space
• the distance are very great; it is dangerous and expensive.
• It is impossible to escape the sun's or Earth's gravity.
• We do not have a destination to visit that we know will support life.

What holds the planets in their orbits around the sun?

• gravity
• speed
• string
• air currents

Which object has the most gravity?

• Earth
• moon
• Jupiter
• sun

The first planet of the solar system?

• Sun
• Venus
• Earth
• Mercury

What is the thing that makes the planets orbit

• Jupiter
• Neptune
• Sun
• God

The hottest planet is 

• Venus
• Earth
• Mercury
• Mars