Review of Star Notes

What is a clue to the temperature of a star?

• The size of the star

• The color of the star

• The distance of the star from Earth

• The shape of the star

What color do very hot stars (30,000K) appear?

• Red

• Yellow

• Blue

• White

What type of energy do red stars emit?

• Short wave energy

• Long wave energy

• Medium wave energy

• No energy

What is the temperature range of yellow stars?

• 3000 to 4000 K

• 4000 to 5000 K

• 5000 to 6000 K

• 6000 to 7000 K

What percentage of stars are binary stars?

• 25%

• 50%

• 75%

• 100%

What do binary stars do?

• They collide with each other.

• They orbit each other.

• They move away from each other.

• They remain stationary.

What can binary stars be used to determine?

• The temperature of a star.

• The color of a star.

• The mass of a star.

• The age of a star.

Around what point do binary stars orbit each other?

• Center of gravity.

• Center of light.

• Center of mass.

• Center of energy.

For stars of equal mass, where is the center of mass located?

• At the edge.

• In the center.

• Near the larger star.

• Near the smaller star.

If one star is more massive than the other, where will the center of mass be?

• Closer to the less massive one.

• At the midpoint.

• Closer to the more massive one.

• At the edge of the orbit.