Introduction Test Flashcards

1
Q

What is the revolution of the earth around the sun called?

A

orbit

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2
Q

What is the slow wobble of the Earth’s axis called - it is due to the influence of the moon?

A

Precession

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3
Q

What is the recognizable patterns of stars in the sky - there are 88 of them.

A

constellations

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4
Q

What is a large glowing ball of gas that generates heat and light through nuclear fusion?

A

star

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5
Q

What are recognizable patterns in the sky that are not one of the 88 constellations?

A

asterism

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6
Q

What is the portion of the entire universe that we can potentially see called?

A

observable

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7
Q

What is the time of year when the sun it at the LOWEST altitude in the sky?

A

winter solstice

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8
Q

What are moderately large objects that orbit a star - these are rocks, icy or gaseous?

A

planet

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9
Q

What is the sum total of all matter and energy - everything between and within all the galaxies?

A

Universe

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10
Q

What are relatively small and rocky objects that orbit a star?

A

comet

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11
Q

What is an object that orbits a planet?

A

moon

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12
Q

What is the spin of the earth on its axis?

A

rotation

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13
Q

What time of year is when the sun is at the HIGHEST altitude in the sky?

A

summer solstice

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14
Q

What is an imaginary sphere that surrounds the earth and is used to “map” the stars in the sky?

A

celestial sphere

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15
Q

What is it when the sun is at its highest point in the sky for any given location?

A

local noon

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16
Q

What is another name for the first day of spring?

A

vernal equinox

17
Q

What is the closest star to the earth?

18
Q

What are constellations that can be found on the equator of the celestial sphere?

19
Q

What is the study of the universe?

20
Q

What are some reasons we have seasons on earth?

A

the elliptical orbit of the earth

the tilt of the earth

21
Q

What is the name of the North Star?

22
Q

What is the name of the wobbling of the earth’s tilt?

A

precession

23
Q

What are time zones determined by?

A

local noon

24
Q

What is the altitude of the north star?

A

The same as your latitude above the equator

25
What does the axis of the earth ALWAYS point to?
Polaris
26
The stars will rise on the ________ horizon.
East
27
What is the average distance from the sun to the earth measured in?
astronomical units
28
What has the GREATEST effect on you getting a sunburn?
the height or angle of the sun in the sky
29
What is the term for the distance light can travel in one year?
a light year
30
What effects you getting a sunburn?
1. the direct of the tilt of the earth 2. how close you are to the equator 3. the angle of the sun in the sky
31
At what angle does the sun need to be located before you have to be worried about getting sunburn?
above 45*
32
Why is the first day of summer the "longest" day?
The sun is at its highest point in the sky at local noon
33
Your altitude is the same as WHAT in degrees above the equator?
the altitude of the north star
34
What is used to measure the huge distances between objects in the universe?
light years.