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Scientists use the light-year to describe the relationships between objects in space. What does a light-year measure?
constellations
the distance that light can travel in one year
The sun is much closer to Earth than other stars are.
Rotation of Earth on its axis and revolution of Earth around sun, the stars will be in a different location/not visible.
The one that is farther away must be brighter.
size and distance from Earth
average
related to their sizes
Compared to other stars, the Sun is __________ in size, brightness and temperature
constellations
the distance that light can travel in one year
The sun is much closer to Earth than other stars are.
Rotation of Earth on its axis and revolution of Earth around sun, the stars will be in a different location/not visible.
The one that is farther away must be brighter.
size and distance from Earth
average
related to their sizes
A stars' brightness or luminosity can be explained by its...
constellations
the distance that light can travel in one year
The sun is much closer to Earth than other stars are.
Rotation of Earth on its axis and revolution of Earth around sun, the stars will be in a different location/not visible.
The one that is farther away must be brighter.
size and distance from Earth
average
related to their sizes
Observed patterns of stars that people use to mark the positions of stars in the sky
constellations
the distance that light can travel in one year
The sun is much closer to Earth than other stars are.
Rotation of Earth on its axis and revolution of Earth around sun, the stars will be in a different location/not visible.
The one that is farther away must be brighter.
size and distance from Earth
average
related to their sizes
A student learns that the sun is classified as a medium-size star and that many stars are much bigger and brighter. However, the student observes that other stars look very dim. Why do other stars look much dimmer than the sun?
constellations
the distance that light can travel in one year
The sun is much closer to Earth than other stars are.
Rotation of Earth on its axis and revolution of Earth around sun, the stars will be in a different location/not visible.
The one that is farther away must be brighter.
size and distance from Earth
average
related to their sizes
The difference in the brightness of two stars with the same surface temperature is
constellations
the distance that light can travel in one year
The sun is much closer to Earth than other stars are.
Rotation of Earth on its axis and revolution of Earth around sun, the stars will be in a different location/not visible.
The one that is farther away must be brighter.
size and distance from Earth
average
related to their sizes
Jerome notices that two stars appear to have the same brightness. He knows that one of the stars is much farther away than the other. What could he conclude about the two stars?
constellations
the distance that light can travel in one year
The sun is much closer to Earth than other stars are.
Rotation of Earth on its axis and revolution of Earth around sun, the stars will be in a different location/not visible.
The one that is farther away must be brighter.
size and distance from Earth
average
related to their sizes
If you view stars in March, will the stars be in the same location in the night sky in October? Explain.
constellations
the distance that light can travel in one year
The sun is much closer to Earth than other stars are.
Rotation of Earth on its axis and revolution of Earth around sun, the stars will be in a different location/not visible.
The one that is farther away must be brighter.
size and distance from Earth
average
related to their sizes
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