Show:
Stars
Vocabulary
True/False and Correct
Scientists
Light and Measurement

100

The state of matter of the sun and stars

What is plasma?

100

The distance between two peaks of a wave

What is wavelength?

100

Electromagnetic radiation carries energy and information. 

True

100

This is your favorite scientist from this series

Who is.... 

100

Distances in space outside of our solar system are measured in ...

Light years

200
All matter, energy, space and time that exist now and have ever been. 

What is the universe?

200
The visible part of electromagnetic spectrum

What is light?

200

A light-year measures the speed light travels in a year in the vacuum of space. 

False -  correct answer is distance (not speed). 

200

The founder of Modern Cosmology. 

Who is Edwin Hubble?

200

This 'unit' measures the distance between Earth and the sun. 

1 AU (Astronomical unit)

300

H and He 

What are hydrogen and helium?


300

The shift to longer wavelengths when the source is moving away from the observer. 

What is Redshift?

300

Gamma rays are on the blue end of the electromagnetic spectrum. That tells you they have a long wavelength. 

False - short wavelength, not long. 
300

Edwin Hubble formulated his law in 1929. In 1917, another scientist produced a model showing that the universe was expanding (Hubble's Law). The scientist did not believe in his own model and did not publish his work. 

Who is Albert Einstein?

300

Visible light is part of what spectrum?

The electromagnetic spectrum. 

400

On the HR diagram, most stars, including our sun, are in this sequence, because their cores are stable. 

What is the main sequence?

400

when nuclei join together to form a heavier nucleus

what is nuclear fusion?
400

Stars emit light because of nuclear fusion reactions. 

True.

400

In 1983, this scientist proposed a theory about the boundaries of the universe, stating that the universe has no boundaries. 

Who is Stephen  Hawkings?

400

The milky way galaxy is how many light years across?

100,000 

500

These stars are in the upper right hand corner of the HR diagram because they are bright and cool. 

What are the Red Giants

500
The change in wavelength of electromagnetic radiation when the source of the radiation is moving toward or away from an observer

What is the Doppler effect?

500

There are three states of matter: solid, liquid, and gas. 

False. Four states of matter; plasma. 

500

Huggins was the first person to identify this shift of light from some stars.

What is the Doppler shift?

500

What type of matter does not give off or reflect electromagnetic radiation and is observed through its gravitational effects. 

Dark matter.