Explaining the Early Universe 10.1A
Galaxies 10.2A
Stars 11.1A
The Sun & Its Planetary Systems 11.2A
100
When did the Big Bang happen?
13.7 billion years ago.
100
What is a galaxy?
A galaxy is a group of stars, gas, and dust that are held together by gravity.
100
On a Hertzsprung-Russell diagram, where is the sun?
In the middle
100
Q: What are solar flares?
A: Violent eruptions of hot gases.
200
The distance between stars and galaxies is decreasing - True or False?
False
200
Name the three types of galaxies
Spiral, Elliptical and Irregular
200
What is formed after a “Super Giant” collapses on itself?
A supernova
200
Q: _________ are planets closer to the sun, and are also called inner planets.
A: Terrestrial Planets
300
What is the instrument called that first detected background radiation in 1960's?
Radio Telescope
300
The Milky Way is a ______ galaxy
spiral
300
How hot is a blue star?
20,000 to 35,000°C
300
Q: Most asteroids orbit the sun in a band between which two planets?
A: Mars and Jupiter
400
Who made the first observation of the Big Bang Theory?
Edward Hubble
400
_______ causes a large, slowly spinning cloud of gases, dust, and stars to contract, forming a galaxy.
Gravity
400
What device is used to analyze star light?
A spectroscope
400
Q: What substance makes Neptune and Uranus blue?
A: Methane
500
According to the Big Bang Theory, how did the Big Bang happen?
A little hot dense piece of matter expanded and cooled, making the universe.
500
What galaxy is the earth in?
The Milky Way
500
What is a Hertzsprung-Russell diagram?
A diagram that shows the relationship between a star’s luminosity and its temperature
500
Q: What kind of precipitation happens on Venus?
A: Sulphuric acid rain
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