Astro 1500 Trivia September 30, 2024 (Lectures 8-10)

Which part of the sun produces energy for the sun?

• The Core

• The Radiative Zone

• The Convection Zone

• Photosphere

Tags

NGSS.HS-ESS1-1

What exactly are sun spots?

• They are not real; just elements blocking parts of the sun

• Spots on the sun that are significantly hotter than the photosphere

• Cooler regions of the sun caused by the suns Magnetic Field

• Regions of denser elements

Which area of the sun is the hottest?

• Photosphere

• Chromosphere

• Transition Region

• Corona

Why doesn't the sun collapse under gravity?

• Gravity doesn't collapse objects

• The magnetic field of the sun counteracts the effects of gravity

• Scientists still don't know

• The outward pressure from the suns power counteracts the effects of gravity

Tags

NGSS.HS-ESS1-1

The ____ the stellar parallax, the ____ the stellar object is from us.

• Larger, Farther

• Larger, Closer

An object moving towards the earth would appear to be

• Red Shifted

• Blue Shifted

How can astronomers calculate velocity of a stellar object?

• By using the distance of the object and the proper motion

• By using stellar parallax

• By using the doppler effect

• By only using proper motion

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-1

Star #1 has twice the parallax of Star #2. What can we tell about the distances?

• Star #1 is twice as far away

• Star #2 is twice as far away

• Star #1 is four times as far away

• Star #2 is four times as far away

Which of the following about stellar parallax is TRUE?

• Stellar parallax only works for objects relatively close to the earth (< 10000 pc away)

• An object farther away has a larger stellar parallax

• Astronomers calculate parallax using the earth's orbit around the sun

• Stellar Parallax is used to measure distance

______ is the speed an object moves toward or away from us, _______ is the speed an object moves across our vision, and _______ is the combination of the two

• Radial velocity, tangential velocity, space velocity

• Radial velocity, space velocity, tangential velocity

• Space velocity, tangential velocity, radial velocity

• Space velocity, radial velocity, tangential velocity