Telescopes
Lives of Stars 1
Lives of Stars 2
Galaxies
The Expanding Universe
100

Who is credited with the invention of the telescope and why?

Galileo because he was the first to point it up to the stars.
100
An imaginary pattern of stars.
What is a constellation?
100

All stars begin as this.

What is a nebulea, cloud of dust and gas

100

These are massive in size and found at the center of every single galaxy.

What are blackholes?

100
The theory of how the universe formed.
What is the big bang.
200
What is the shortest main type of electromagnetic radiation?
What is radio waves?
200
Name three characteristics used to classify stars.
What is color, temperature, size, composition, and brightness.
200

What determines how long a star will exist?

What is its mass. Stars will more mass live shorter than stars with less mass.

200
A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity.
What is a galaxy.
200

What did humans first believe was true about the earth and why?

They believed that Earth was at the center of the universe and everything we saw was actually revolving around us.

300
What are the two major types of optical telescopes?
What are refracting and reflecting.
300

What will be the final fate for our sun in 3 billion years?

It will eventually become a white dwarf and slowly fade out.

300

What happens when a supermassive star runs out of fuel?

a supernova, that results into a blackhole

300
Describe the three types of galaxies.
What is spiral (pinwheel), elliptical (flattened ball) and irregular (no regular shape).
300

What is Hubble's Law/Constant?

The further away an object is from us, the faster it is moving away from us

400
Why are many large observatories located on mountaintops or in space?
What is because it is clearer on mountaintops than at sea level and light from cities do not interfere.
400

A measure of how much energy leaves a star in a certain period of time, also sometimes referred to as the brightness. 

What is luminosity?

400

What will happen to the sun when it runs out of fuel? Explain.

What is its outer layers will expand and it will become a red giant. Eventually, the outer layers of the red giant will drift into space and the remainig hot core will be a white dwarf.

400

The name of the galaxy that is currently hurtling towards us in the universe

What is the Andromeda Galaxy?

400

What do scientists conclude about the future of the universe?

What is it will likely expand forever? (the big freezr)

500
How does a reflecting telescope work?
What is a curved mirror is used to collect and focus light.
500

An incredibly dense star left after a supernova explosion, made up almost entirely of neutrons.

What is a neutron star?

500

What is a black hole and how can it be detected?

What is an object with gravity so strong that nothing, not even light, can escape. Astronomers can detect black holes indirectly. Gas near a black hole is pulled so strongly that it revolves faster and faster around the black hole. Friction heats up the gas and X-Rays can be detected.

500

Small galaxies that only contain a million to a couple of billion stars.

What are dwarf galaxies?

500

Describe the redshift theory.

When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer.

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