Earth Science-scientists/famous Astronomers

22 Questions  I  By Caraj

  
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1.  Who made most of mars obervations, plus were more precise then before
A.
B.
C.
2.  who discovered earth was a planet
A.
B.
C.
3.  Galileos most important contributions were...
A.
B.
C.
4.  The greater the mass of the object....
A.
B.
C.
5.  According to........, every body in the universe attracts every other body with a force that is directly proportional to their masses and inversely proportional to the square of the distance between their mass ( law of gravitation) 
A.
B.
C.
6.  Keplers third law states that the square length of time it takes a planet to orbit the sun is proportional to the cube of its mean distance from the...
A.
B.
C.
7.  Who spent 20 years plotting the planets
A.
B.
C.
8.  The force of gravity acting upon an object is...
A.
B.
C.
9.  True or false: the orbit of mars and other planets are ellipses, not circles
A.
B.
10.  And AU is NOT equal to...
A.
B.
C.
11.  True or false: the moon surface is smooth
A.
B.
12.  Who first used a telescope
A.
B.
C.
13.  As mars moves away from the sun it...and when it moves toward the sun it....
A.
B.
C.
14.  Keplers 2nd law of planetary motion states: 
A.
B.
C.
15.  True or false: a moving object will continue to move at a constant speed and in a straight line with gravity is called inertia
A.
B.
16.  What is a sunspot, who discovered it? 
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B.
C.
17.  Who proposed the model of the solar system with the sun at the center
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B.
C.
18.  What did galileo NOT discover...
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B.
C.
19.  Who calculated that the earth and the sun, but were too small
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B.
C.
20.  Who created the law of universal gravitation
A.
B.
C.
21.  the plotemic system was..
A.
B.
C.
22.  Who discovered the three laws of planetary motion, plus had a strong mathematical mind
A.
B.
C.
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