Earth is the only planet to have ____ water on the surface.
Liquid
Why do we have leap years?
It takes 365.25 days for the earth to orbit the sun.
As the Earth spins on its axis, we have a ___ and ___ cycle.
Day and night
How long is one day on Planet Earth?
24 hours
How long (in days) does it take us to orbit (revolve) around the Sun?
365 days
71% of the Earth is covered in ____.
Water
We have over how many 'man-made' objects are orbiting around Earth?
100,000
True/False: The Earth's structure (what it's made of) has 3 basic layers.
False
The part of the Earth we walk on is called the ____.
Crust
The very center of the Earth is called the ___.
Core
The ___ is the layer of the Earth that is as hot as the Sun.
crust
Earth's atmosphere has ___ main layers
4
Without ____, humans & objects would all become weightless.
gravity
The Earth's ___ is the 5th largest in the Solar System.
Moon
The Moon has ___ water near the poles.
Frozen
True/False:The atmosphere on the moon is breathable.
False
