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Earth Science Practice Test

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1.
1 point
The ________ ________ is the way scientists organize chemical elements.
2.
1 point
The smallest unit that can exist by itself and retain all its chemical properties is a _________.
3.
1 point
___________ is the study of the "solid" Earth.
4.
1 point
Halfway between the poles, a circle called the prime meridian that divides Earth into the Northern and Southern Hemispheres.
5.
1 point
What is the difference between a proton and a neutron?
6.
1 point
____________ is a combination of two or more substances that are not chemically combined.
7.
1 point
Hydrogen's atomic number is 1.
8.
1 point
Halfway between the poles, a circle called the equator divides Earth into the Northern and Southern Hemispheres.
9.
1 point
Beneath the crust is the _____________.
10.
1 point
___________ is the softest mineral.
11.
1 point
Is the following equation balanced?

2H2 + O2 --> 2H2O
12.
1 point
There is no gravity in the moon.
13.
1 point
How many kilograms are the following number of pounds: 120 pounds.
14.
1 point
What Earth Science branch studies global oceans?
15.
1 point
____________ is considered to be Earth's twin.
16.
1 point
___________ is located at the center of the Earth and is the innermost structure of our planet.
17.
1 point
Photosynthesis is the process in which plants capture solar energy to make sugar.
18.
1 point
_________ is the hardest mineral.
19.
1 point
Color is a chemical property of a mineral.
20.
1 point
____________ are organisms that make their own food.
21.
1 point
Earth's shape is a perfect sphere.
22.
1 point
The crust is the part of Earth where we live.
23.
1 point
The symbol of Potassium is Ag.
24.
1 point
Geology is the study of the universe.
25.
1 point
Chemical reactions are described in a ________________.
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