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24 Cards in this Set
- Front
- Back
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What movement of Earth causes days and nights? |
rotation on its axis |
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What movement of Earth causes a year? |
revolving around the sun |
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What is the tilt of the Earth? |
23.5% |
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if it's spring in South America, what season is it in Asia? |
Autumn |
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If it's summer in Antarctica, what season is it in Iceland? |
Winter |
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List the name of the first day of each season and the date it falls on. |
Summer solstice-June 20th or 21st Winter solstice-December 21st or 22nd Spring equinox-March 20th or 21st Autumnal equinox-September 22nd or 23rd |
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What is the longest day of the year? |
Summer solstice |
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What is the shortest day of the year? |
Winter solstice |
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What is the gravity on the moon ? |
1/6 Earth's gravity |
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Why do we always see only one side of the moon? |
The moon rotates and revolves in the same amount of time (27 hrs 43-44 mins) |
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What are the phases of the moon in order, starting with waning gibbous? |
Waning gibbous moon Third quarter moon Waning crescent moon New moon Waxing crescent moon First quarter moon Waxing gibbous moon Full moon |
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What is a solar eclipse? |
Occurs when the moon passes between the Earth and the Sun, blocking sunlight from reaching Earth. The moon phase will be a New moon |
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What is a lunar eclipse? |
No sunlight is reaching the moon, the moon phase will be a Full moon |
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When does a lunar eclipse occur? |
When Earth is between the moon and sun |
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What causes the tides on Earth? |
The moon's gravitational pull |
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When the moon orbits Earth, it causes bulges. What are these bulges? |
Waves, high tides and low tides |
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What is spring tide? |
High tide is higher, low tide is lower; moon and sun are aligned |
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What is neap tide? |
When the Sun and Moon are at right angles. Produces a tide with the least difference in high and low tides |
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What kind of star is the sun? |
A medium star (yellow dwarf) |
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What is the corona of the Sun? |
The outermost, visible layer |
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What is a sunspot? |
A small dark area of cooler gas on the photo sphere |
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What is solar wind? |
Electrically charged particles released by the corona |
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What is a solar flare? |
A big explosion on the surface of the sun |
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What is a prominence? |
A reddish loop of gas that occur near sunspots |
