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Stars
Energy
Sustainability
More Energy
More Stars
100
When a high mass star explodes
What is a supernova
100
Almost all energy comes from here
What is the sun?
100
We should use more ___________ resources if we want to live sustainably
What are renewables?
100
Using oil and natural gas is great, except that it contributes to this global threat to humanity
What is global warming?
100
The Hertzsprung-Russell diagram groups stars by ______________and ______________
What is temperature and luminosity?
200
This element is formed when hydrogen atoms fuse inside a star
What is helium?
200
Fracking helps us to release this energy resource
What is natural gas?
200
Place your large windows on this side of the house to best utilize passive solar energy
What is the south side?
200
Global warming is caused by releasing these into our atmosphere.
What are greenhouse gases?
200
Our sun was born approximately this many years ago
What is 4.5 billion years ago?
300
A black hole forms when a star has very high _________
What is mass?
300
Oil is primarily used for this activity
What is transportation?
300
Water used for irrigation that has already been used once in the shower or sink is called this
What is greywater?
300
Global warming is caused by this natural event that humans have increased by burning fossil fuels
What is the greenhouse effect?
300
When our solar system formed, heavier elements went here
What is near the sun? (to the center)
400
Our sun is in this stage of its life
What is main sequence?
400
Natural gas is primarily used for this
What is heating?
400
Earthships in New Mexico get their water from here
What is rain?
400
One way to reduce our reliance on natural gas is to heat our homes using this
What is geothermal energy?
400
The Milky Way galaxy is this shape
What is a barred-spiral?
500
Stars are in a state of balance, also called this
What is equilibrium?
500
Coal is primarily used for this
What is electricity?
500
Sustainable living means using these resources instead of nonrenewable ones
What are renewables?
500
As the Fukushima disaster in Japan has shown us, this nonrenewable energy resource can be extremely dangerous if something goes wrong
What is nuclear power?
500
Earth's seasons are caused by this
What is the rotation of Earth on its axis (the tilt of the Earth)?