Easy
What is the name of the theory that explains how the solar system formed from a cloud of gas and dust?
Nebular Theory
How long does it take Earth to revolve around the Sun?
365 ΒΌ days
Why is Venus hotter than Mercury even if it is farther from the Sun?
Because of its thick atmosphere that traps heat
What is the star at the center of the solar system?
Sun
Which planet is the biggest in the solar system?
Jupiter
What is the difference between inner and outer planets?
Inner planets are rocky; outer planets are gas giants
What do we call the objects that revolve around the Sun?
Planets
Which planet is closest to the Sun?
Mercury
Why is Pluto considered a dwarf planet now?
Because it has not cleared its orbit of other objects and does not meet all the requirements of a full planet.
What is the movement of Earth around the Sun called?
Revolution
Which planet is known for its beautiful rings?
Saturn
If Earth did not rotate, what would likely happen to day and night?
One side would always be day and the other side always night
What causes day and night on Earth?
Rotation
If a planet is very far from the Sun, what are two likely characteristics it will have?
Very cold temperature and longer revolution period
Why is Earth able to support life compared to other planets?
Because it has water, air, and the right temperature