HR Diagram - 8th Grade Science STAAR Review

Front

An astronomer observes several items in the night sky. She observes this item and graphs its temperature and brightness. What is it?

Back

a nearby star relatively close to our solar system

Front

Using this chart what is Object #2 most likely to be? Options: Venus, a nearby star relatively close to our solar system, a black hole near the center of the Milky Way, another galaxy

Back

a nearby star relatively close to our solar system

Front

The Horsehead Nebula is located about 1,500 light years from Earth in the constellation Orion. What is most likely occurring in the Horsehead Nebula?

Back

new star formation

Front

The stars we see at night are:

Back

in the Milky Way galaxy

Front

An astronomer discovers a new star that is very hot, but not very bright. What type of star did she discover? Options: a red giant, a young star on the main sequence, an old star on the main sequence, a white dwarf

Back

a white dwarf

Front

Our Sun is a middle-aged star with an average temperature and brightness. What type of star is our Sun according to the Hertzburg-Russell diagram?

Back

a star in the middle of the main sequence

Front

As a normal, averaged-size star progresses through its life cycle, what change will it undergo?

Back

it becomes cooler

Front

Which of the following galaxies is most like our own Milky Way?

Back

C

Front

Using the picture, which answer choice could best be classified as an irregular galaxy?
Options:
Galaxy A,
Galaxy B,
Galaxy C,
Galaxy D

Back

Galaxy B

Front

Using the chart below, what type of telescope would be best suited for observing pulsars?

Back

radio telescopes