Space and Earth

Question 1

Astronomy

Answer 1

The area of science that looks at the universe and everything in it

Question 2

Geocentric

Answer 2

A theory of the structure of the solar system in which earth was thought to be the center

Question 3

Heliocentric

Answer 3

A theory of the structure in which the sun is in the center

Question 4

Universe

Answer 4

Everything that exists including plants , stars , galaxies and all forms of matter and energy

Question 5

Big Bang

Answer 5

Most scientists believe that the universe began with an explosion about 14 billion years ago that was a mass that was hit and dense exploded and formed the universe

Question 6

Galaxy

Answer 6

A large group of stars , dust , gas and dark matter held together by gravity

Question 7

Antimatter

Answer 7

The mirror image of matter. Every particle of matter has a corresponding particle of antimatter. When they meet they destroy each other and are converted into pure energy.

Question 8

Hypothesis

Answer 8

Collection of ideas that seem to explain what is observed

Predictions can be made

Question 9

Models

Answer 9

Describes reality based on hypothesis that have withstood observational and experimental tests
Explain with mathematical properties and behaviors of some object or phenomenon

Question 10

Theory

Answer 10

Series of well tested hypothesis that together form a selfconsistant and accurate description of nature
Capable of making predictions that can be tested and verified by anyone

Question 11

Laws

Answer 11

Proven theories that have stood to the test of time and have broad applicability

Question 12

Constellation

Answer 12

Stars grouped together

There are 88 constellations

Question 13

Ecliptic plane

Answer 13

The plane of earths orbit around the sun it is not a perfect circle