Show:
History of the Universe
The Big Bang
Life Cycle of Stars
Skills
Random
100
What is cosmology?
The study of the universe.
100
How old is the universe according to The Big Bang?
13.7 billion years old
100
What is a giant cloud of gas and dust called?
Nebula
100

An educated prediction about the outcome of an experiment. 

Hypothesis
100

What space technology is responsible for exploring other moons or planets?

Probes and/or rovers

200
Who found data that led us to learn that the universe is changing constantly and always expanding?
Edwin Hubble
200
What was the first element created after the big bang?
Hydrogen
200
What is nebular hypothesis?
Most widely accepted explanation of how the solar system formed.
200

The variable that you keep the SAME in an experiment. 

Controlled Variable

200
What came before The Big Bang?
We don't know... there is no evidence to find out.
300
What is Hubble's Law?
States that the further away a galaxy is- the faster it is moving from us
300
What is nuclear fusion?
Fusing elements together under intense heat and pressure to create new elements
300
Explain what will happen to our Sun in the next stage of its life.
It will become a white dwarf- meaning it will collapse into itself, shrink to become very hot, and then eventually the light will fade.
300

The variable that you CHANGE in an experiment

Independent Variable

300
What is nuclear fission?
Splitting the nucleus of an atom.
400
Explain the Redshift.
If something is moving away from us in the universe, it has a red-tint to it. Therefore, when a galaxy has a red color to it, that means it must be moving away from us.
400
Explain dark matter AND how we know it exists.
Emits no electromagnetic radiation so it can't be observed directly. We know it exists because of the gravitational pull it has.
400
Explain the life cycle of a Supergiant.
Supergiant will eventually turn into a supernova because the iron core explodes, then it could become a neutron star or a black hole.
400

The variable you are MEASURING in an experiment. 

Dependent variable

400

What device helps astronomers study faraway planets and stars?

Telescope

500
What all does the universe contain?
All star systems, galaxies, gas and dust, all matter and energy, all space and time.
500
Explain how we know there is dark matter around the "outside" of our galaxy.
It is moving just as quickly on the outside of the galaxy as it is on the inside where there is a lot of mass, so there must be a lot of mass on the outside as well, we just can't see it.
500
Explain why a star could become either a neutron star or a black hole.
Depends on the mass- smaller mass leads to a neutron star, a larger mass leads to a black hole.
500

Whats the difference between reliability and validity?

Reliability- consistency of results

Validity- accuracy of measurement, does the experiment measure what it's supposed to measure

500
The nebular hypothesis states that the solar system formed about how many years ago?
4.6 billion years ago