Chapter 13 Test 1 Review

The apparent shift in the position of an object when viewed from different locations is called 

• Parallelogram 
• Sun flare 
• Neptunian object 
• Parallax 

Why can't scientists use parallax to find long distances?

• because parallax decreases at large distances
• because parallax increases at large distances
• because they can't get starlight from very far away
• That's not true, parallax is a great tool for finding far distances

The color of a star depends on its

• size
• temperature
• shape
• magnitude

What color are the hottest stars?

• red
• yellow
• orange
• blue

The brightness of a star as it appears to an observer on Earth

• light-year
• spectrum
• apparent magnitude
• absolute magnitude

Magnitude measures what about a star?

• Brightness
• Distance
• Temperature
• Size

Using the formula d=1/p, calculate the distance in parsecs of Vega which has a parallax angle of 0.129.

• 1.29 parsecs

• 7.75 parsecs

• 8.29 parsecs

Using this table, which star is located the farthest away?

• Enif

• Sirius

• Rigel

• Deneb

On a Hertzsprung-Russell diagram, the star in the __________ left corner will have the highest absolute brightness and surface temperature.

• Left

• Right

• upper

• Lower

A star's surface temperature and its _____________ are directly related.

• color

• brightness

• age

• spectrum