Term
| The cycles of the moon are? |
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Definition
| The phases of the moon the tide and Lunar and Solar eclipses |
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Term
| How do we see phases of the moon? |
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Definition
| From Earth, we see different portions of the Moon’s surface lit by the sun, causing the phases of the Moon. |
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Term
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Definition
| The tides are caused by the difference of the Moon’s gravitational attraction on the water on Earth |
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Term
| WHAT ARE THE TWO TIDAL EFFECTS? |
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Definition
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Term
| Spring tides happen when? |
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Definition
| Near the Full and New moon cause the spring tides. |
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Term
| neap tides are caused by? |
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Definition
| Near first and third quarter, the two effects work at a right angle w.r.t. each other causing neap tides. |
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Term
| When can Lunar eclipses occur? |
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Definition
| These can only occur when the Moon is full and is on the ecliptic |
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Term
| When is the lunar eclipse total? |
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Definition
| When the Moon is inside the Earth’s when the moon is totally in the umbra, the lunar eclipse is total and can be seen from anywhere on the nighttime side of the Earth |
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Term
| When is the lunar eclipse partial? |
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Definition
| When the Moon is partially in the umbra, the eclipse is partial |
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Term
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Definition
| Eclipses occur in cycles. There is a maximum of seven eclipses per year (solar + lunar). |
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Term
| When can solar eclipses occur? |
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Definition
| These can only occur at the time of the new Moon; also, the Moon must be precisely on the ecliptic. |
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Term
| Why don't solar eclipses occur every month? |
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Definition
| (The Moon’s orbital plane is inclined 5°to the ecliptic, the Earth’s orbital plane, so eclipses do not occur every month.) |
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Term
| How often do solar eclipses occur? |
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Definition
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Term
|
Definition
| position closest to the sun |
|
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Term
|
Definition
| position closest to Earth |
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Term
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Definition
| position furthest away from Earth |
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Term
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Definition
| position furthest away from the sun |
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Term
| What direction does the earth rotate? |
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Definition
Looking down from top
the earth rotates in a counterclockwise
direction. |
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Term
| At what angle is the earth titled on it's axis? |
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Definition
The earth is tilted on its axis
at an angle of 23.5 degrees. |
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Term
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Definition
Seasons are caused
by the tilt of the earth’s axis. |
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Term
| Why is it warm in the summer? |
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Definition
Summer days are warm because the sun's
rays hit the earth more directly and
for a longer period of time. |
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Term
| What happens when the north pole is leaning towards the sun? |
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Definition
When the North Pole is leaning
towards the sun, it has longer days
and shorter nights. |
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Term
| What happens when the suns rays become flatter? |
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Definition
| As the angle of the sun’s rays becomes flatter, the sunlight spreads out over a larger area, It becomes less intense. |
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Term
| When does summer solstice start? |
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Definition
|
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Term
| When does winter solstice start? |
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Definition
| 21 December -Winter Solstice |
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Term
| When does autumnal equinox start? |
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Definition
| 22 September -Autumnal Equinox |
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Term
| When does Vernal equinox start? |
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Definition
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Term
| In the northern hemisphere in what direction is the north pole facing the sun during winter? |
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Definition
| North Pole points away from sun |
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Term
| in what direction is the north pole facing the sun during summer in the summer solstice? |
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Definition
| North Pole points towards sun |
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Term
| During the spring and fall how is the sun shining and what type of days are their? |
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Definition
Sun shining directly on equator.
Equal day and night in both hemispheres
Vernal |
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Term
| postition of the earth in the seasons? |
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Definition
|
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Term
| postition of the earth in the seasons? |
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Definition
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