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Astronomy quiz 1 review
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Name three layers of the sun.
Core, Radiative zone, Conductive zone, Photosphere, Corona
How old is our sun?
4.5 billion years old
What type of object is our sun?
A main sequence star
What is an example of radiation
The Sun
What is an example of convection?
Second floor is hotter when heat rises
What is an example of conduction?
Cook on a stove
What are two ways the sun affects earth?
Heat, Light, and Gravity
How hot is the core of the sun?
15 million degrees
What two elements make up the majority of the sun?
Hydrogen and Helium
What process makes energy on the sun?
Fusion
What is the study of objects in space?
astronomy
What is the shape of a planet's orbit around the sun?
ellipse
Which scientist described planetary motion?
Johannes Kepler
What is the earth moving around the sun?
revolution
What is the earth spinning on its axis?
rotation
How long is one revolution of Earth?
1 year (365 days)
How long is one rotation of Earth?
1 day (24 hours)