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English 22 Public

Properties of stars and modeling

Study Slideshow

What is a complex system of garments that allow astronauts to work safely outside their spacecraft called?

Space suit

10

What variable is on the X-axis of the Hertzsprung-Russell diagram?

Temperature

20

What is a person trained to be a part of a spacecraft crew called?

Astronaut

10

What describes the true brightness of a star; absolute magnitude or true luminosity?

Absolute magnitude

25

What is the term for how bright a star appears to us on Earth; special relativity or apparent magnitude?

Apparent magnitude

25

VY Canis Majoris is a very, very large star. It is an extremely bright, cool red star. Where would it be found on the HR diagram?

Top right

20

What are tiny meteoroids traveling fast enough to damage spacecraft called; micrometeoroids or vacuum?

Micrometeoroiods

15

What is a space walk?

An activity in which an astronaut moves around and does work outside a spacecraft while in space.

15

Describe microgravity.

The almost complete absence of gravity that can only be found in space.

25

Where are blue stars found on an HR diagram?

At the left.

20

What is a volume of space mostly empty of matter, such as oxygen, to breathe; vacuum or microgravity?

Vacuum

20

Which star would have the greatest true brightness; Canopus- absolute magnitude of -2.50 or Rigel- absolute magnitude of -8.10?

Rigel

25

What is a sudden eruption of magnetic energy released on or near the surface of the sun?

Solar Flare

20

What is a large, bright, gaseous feature extending outward from the sun's surface, often in a loop shape?

Prominence

20

What are the relatively cool, dark spots appearing periodically in groups on the surface of the sun that are associated with strong magnetic fields?

Sun spots

15

What is heat transfer in a gas or liquid by the circulation of currents from one region to another; convection or rotation?

Convection

15