Stars
_______ are spheres of hot gas that give off heat and light.
Stars
Which of the following is not typically a star color?
Red, green, yellow, white, blue
Green
Large, round objects in space that orbit a star are called ___________.
Planets
Planets in our solar system orbit the ________
Sun
Why does the brightness of our sun differ from the brightness of other stars?
Because it is SO much closer, it is the brightest!
What color of star is the coolest?
red/orange
The imaginary line (or pole) on which earth spins
Axis
What unit do scientists use to measure distances in space?
Light years
List ALL the factors you can think of that might affect star brightness.
size, distance from earth, color, heat
What is the BEST explanation for why some stars appear brighter than others?
Some stars are closer to earth than others. These stars usually appear the brightest.
Explain why stars appear to move across the sky each night.
The earth is spinning, or rotating, on its axis.
A chunk of rock that travels through earth's atmosphere is called: __________
Which of the following stars would appear brightest from earth?
Star A: 4.4 light years away
Star B: 4.3 light years away
Star C: 4.7 light years away
Star D: 4.1 light years away
Star D: 4.1 light years away
Mary observes 3 stars in the night sky. Order them from closest to farthest.
C, A, B
The stars in the night sky appear to change position because of the earths _____ and _____.
revolution and rotation
What is a meteor called once it strikes the surface of a planet?
Which of the following is true about the stars in a constellations?
A) They rearrange to make different patterns
B) They are closer together than other stars
C) They are larger than other stars
D) They keep the same pattern
D) They keep the same pattern
Some of the stars we see today may have stopped glowing years ago. How is this possible?
Stars are many light years away from earth. Even though the star has stopped glowing, the light that it released in the past is still travelling to earth.
Throughout the year, the constellations appear to move across the sky. Some disappear, only to reappear at the same time the following year. Why does this happen?
The earth is revolving around the sun, once every 365 days.
A mixture of frozen gases, ice, dust, and rock that orbit the sun: __________
Comets