Science 8 Unit 1 Test😔
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22 Terms
Orbit?
The repeating path that one object in space takes around another one
Rotate?
spinning motion of an object around its own axis
Solar Elevation?
How high the sun is in the sky measured in degrees from the horizon (where the sun meets the sky)
how often does the earth rotate around its axis?
once every day
how often does the earth fully orbit the sun?
once a year
why does the north star not appear to move?
because the northern hemisphere's axis is pointed directly towards it
where do the sun and moon appear to rise?
east
where do the sun and moon appear to set?
west
which direction does earth rotate in the northern hemispher?
counter clockwise
how does earth's rotation affect how the stars appear to move?
It makes them appear to move counter clockwise around the north star
how does lower solar elevation affect temperatures?
When the solar elevation is lower the sunlight is more spread out (less energy) causing the temperatures to be lower
how does higher solar elevation affect temperatures?
When the solar elevation is higher the sunlight is more less spread out (more energy) causing the temperatures to be higher
what is another word for the North Star?
Polaris
Why are the temperatures always opposite between the two hemispheres?
Because when the sunlight is direct in one hemisphere it is at an angle in the other hemisphere and vice versa
What causes Manhattanhenge?
The light rays from the sun and sunset follow a straight path that align between two building in Manhattan because the solar elevation is at a specific angle that happens only two times a year
What causes the new moon?
f the When the moon is between Earth and the sun, the sun’s light shines on the only the half of the moon we cannot see, resulting in a new moon.
What causes the full moon
When the earth is between the sun and the moon, resulting in the sun reflecting light on the side of the moon that we can see, resulting in a fully lit moon.
True or False? we only see one side of the moon.
True.
How many phases of the moon are there?
8
How long is the moon phase cycle?
28 days
True or False? the moon isn't alway up during the night.
true.
How does the moon shine?
The sun reflects onto the moon, creating moonlight