Astronomers
Planets & Stars
Stars
Planets and Stars
Rock and Minerals
100
This astronomer was the first to believe that the sun was at the center of the universe.
Who is Copernicus.
100
A large cloud of dust and gas. A region in space where stars are born.
What is a nebula.
100
If something happened to the sun and it suddenly stopped emitting, light how long would it take for us to find out?
It would take approximately 8 minutes for us to find out because it takes 8 minutes for light from the sun to reach the Earth.
100
What is the name of our galaxy?
What is the Milky Way.
100
What are the three types of rocks called?
Igneous rock, sedimentary rock, metamorphic rock.
200
This astronomer believed that the sun and moon revolved around the Earth. He was the first to discover a supernova.
Who is Tycho Brahe.
200
A gigantic explosion in which a massive star explodes and throws out its outer layers into space.
What is a supernova.
200
What is the third stage of a star's life cycle? Name two things that happen at this stage?
What is the red giant? Outer layers expland hydrogen is running out
200
What is the big bang theory?
Much mass was condensed in one place when one day it exploded. All galaxies, planets and suns that we see today were formed from that explosion.
200
How is each type of rock formed?
Igneous rock: lava cooling Metamorphic rock: heat and pressure deforms the rock Sedimentary rock: weathering, erosion
300
This astronomer believed that Earth was at the center of the universe.
Who is Ptolemy.
300
Name the planets in order from closest to the sun.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Nepturn and Pluto (dwarf planet).
300
What is the second stage of a star's life cycle? Name two things that happens during this stage.
What is the main sequence. a core forms hydrogen atoms fuse to create energy
300
The outer most layer of the sun is called the __________.
What is the corona.
300
What is contact metamorphism? What is regional metamorphism?
Contact metamorphism is when rock is heated by nearby magma. The heat and pressure change the rock into metamorphic rock. Regional metamorphism is when peices of the Earth's crust collide with each other. The heat and pressure from this collision changes the rock to metamorphic rock.
400
This astronomer believed that the sun was at the center of the universe and Earth revolved around it in elliptical orbits.
Who is Johannes Kepler.
400
An object that is so massive that light cannot escape gravity.
What is a black hole.
400
What is the fourth stage of the star's life cycle called? Describe two things that happen during this stage.
White Dwarf Most dense no more hydrogen end of star's life
400
_________________ are the cooler areas on the sun's surface.
What are sunspots.
400
In igneous rocks the longer it takes magma to cool the ______________ the grains. The faster it takes magma to cool the __________ the grains.
What is coarser. What is finer.
500
This astronomer was the first to define gravity. What goes up must come down.
Who is Isaac Newton.
500
Explain why Mercury, Venus, Earth, Mars are closer to the sun than Jupiter, Saturn, Uranus and Neptune.
The inner planets have more mass than the gaseous outer planets. The sun's gravity pulls the terrestrial planets closer to it.
500
Why are blue or white stars hotter than yellow stars?
Blue and white stars have there color because of the elements they burn. The elements give them their heat and their color.
500
How long does it take for the Earth to revolve around the sun? On average, how long does it take for the moon to revolve around the Earth. How long does it take for the Earth to rotate?
365 days. 30 days 24 hours
500
How do geologists classify rocks?
Geologists classify rocks by their composition and by their texture. Composition: what the rock is made up of. Texture: the size and shape of the grains.
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