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STAAR Questions Session 5 - Gravity; Galaxies; H-R Diagram
By Randall Skoog
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Last updated 2 months ago
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Question 1
1.
Question 2
2.
Question 3
3.
Gravity (7.9B)
What is the force that keeps the planets in our solar system orbiting the Sun?
momentum
resistance
gravity
potential energy
Galaxies (8.8B)
A representation of the Milky Way galaxy is pictured below.
Which statement best describes this type of galaxy?
The image is a spiral galaxy and is made up of billions of stars, gas, and dust
held together by gravity.
The image is a spiral galaxy and our solar system can be found in the bright
center of the galaxy.
The image is an irregular galaxy because each of the arms has a different
length.
The image is an elliptical galaxy and is where our solar system can be found.
H-R Diagram (8.9A)
Based on the diagram, which statement about Star 1 and Star 2 is correct?
Star 1 is cooler and brighter than Star 2.
Star 1 is hotter and less bright than Star 2.
Star 1 is brighter and larger than Star 2.
Star 1 is cooler and less bright than Star 2.