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What is at the center of the solar system
the sun
What causes a comet's tail?
Heat from the Sun
What mainly causes tides on Earth?
the moon
What is a lunar eclipse
earth blocks sunlight from the moon
What type of planet is Earth
terrestrial (also inner)
Which planet is closest to the sun
mercury
Liquid water is necessary for what
Life on Earth
What is a high tide
water bulging toward the moon (from gravitational pull)
What does Orbit mean
travel around another object
What are the inner planets?
mercury, venus, earth, and mars
What protects Earth from harmful solar radiations?
magnetic field
What phase comes after a new moon
What is Earth's rotation
spinning on its axis
Which planets have rings
All the gas giants, jupiter, Saturn, uranus, neptune
What are the outer planets mostly made of?
gas and ice
What force keeps planets in orbit?
gravity
What is a full moon?
fully lit side visible
What causes day and night
the rotation of the earth on its axis
What holds earth's atmosphere in place
gravity
What is the asteroid belt?
a region of rocky objects between the inner and outer planets
Where does the moon get its light
it reflects the sun
What is a solar eclipse
moon blocks the sun
What is Earth's revolution
orbiting the sun
Why is Earth's distance from the sun important
it allows liquid water