The study of how the universe began and how it has changed over time.
What is cosmology?
100
Coal that is 90% carbon.
What is anthracite?
200
Known as lava on the outside, it is called this while still beneath the earth's surface
What is magma?
200
Coal, petroleum and natural gas.
What are fossil fuels?
200
Astronomer from Denmark who thought geocentric and heliocentric could be combined into one theory.
Who is Tycho?
200
Usually measured from 32.6 light years away.
What is absolute magnitude?
200
A natural satellite of a planet
What is a moon?
300
Steam from groundwater heated by magma that can be harnessed to generate electrical power and heat
What is geothermal energy?
300
When petroleum is found beneath Earth's surface, you can usually also find this.
What is natural gas?
300
The geocentric theory claims that all planets orbit the Earth in this shape.
What is a perfect circle?
300
The category that contains the majority of the known stars, including our sun.
What is a main sequence star?
300
The flat depression on the top of the volcano
What is a crater?
400
The massive amounts of friction between these moving objects generate enough heat to change Earth's internal temperature.
What are tectonic plates?
400
Soft, crumbly coal that is about 30% carbon
What is lignite?
400
Planets appear to move backwards across the sky due to this visual phenomenon.
What is retrograde motion?
400
The definition of astronomy.
What is the study of heavenly bodies and their orbits?
400
This can create more damage than the actual lava flow from a volcano.
What are ash clouds?
500
The two terms that are used to describe when small pockets of magma are growing horizontally or vertically beneath Earth's surface.
What are sills and dikes?
500
The definition of index fossils.
What is "fossils that are used to identify the age of the rock strata in which they appear?"
500
In Arizona, the impact crater created by one of these falling into the earth is nearly 1 mile wide and 570 feet deep.
What is a meteorite?
500
Stars appear to move in the sky not because they are actually moving, but because Earth's position is constantly moving, which describes this visual phenomenon.
What is a parallax?
500
A hot spring that forcefully ejects hot water and steam from the ground at regular intervals.