What planet is the largest planet among the Terrestrial Planets?
Earth
Earth is the only planet to have ____ water on the surface.
Liquid
The Germanic name "Earth" is at least how many years old?
1,000 Years
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
When we measure distance in space, we use an "AU", which means what?
Astronomical Unit
We have over how many 'man-made' objects 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's surface (Photosphere).
Crust
Earth's atmosphere has ___ main layers
4
In the ___ layer of the atmosphere on Earth, we can see clouds.
Troposphere
In the ___ layer of the Earth's atmosphere, we can see the Aurora Borealis.
Thermosphere
