Stars

Question 1

What causes a star to shine brightly?

Revolt · Accepted Answer

the energy that is released

Question 2

Which characteristic is used to measure the amount of light radiated by a star?

Revolt · Accepted Answer

luminosity

Question 3

Which object is created during the formation of a star?

Revolt · Accepted Answer

a protostar

Question 4

Which event takes place first in the stages before the birth of a star?

Revolt · Accepted Answer

Gravity pulls gas and dust together.

Question 5

Which event signals the birth of a star?

Revolt · Accepted Answer

Extreme heat and pressure causes nuclear fusion.

Question 6

Which color are the hottest stars?

Revolt · Accepted Answer

blue

Question 7

How do spectrographs help astronomers classify stars?

Revolt · Accepted Answer

They analyze the composition of stars.

Question 8

What happens first when a star begins to run out of fuel?

Revolt · Accepted Answer

The star’s core shrinks.

Question 9

Some objects in space are created from clouds of gas and dust.What will happen if the cloud does not have enough mass?

Revolt · Accepted Answer

A star will not form.

Question 10

Which factor causes gas and dust to pull together during the first stage of star formation?

Revolt · Accepted Answer

gravity

Stars Answers