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Xander's Unit 4
Earth's Days, Years, and Seasons
24
Science
6th Grade
03/12/2015

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Cards

Term
What determines the length of a day?
Definition
Earth's rotation around the sun.
Term
What are the phases of the moon in order?
Definition
New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Wanning Gibbous, Third Quarter, Wanning Crescent, New Moon
Term
What determines the length of a year?
Definition
Earth's revolution around the sun.
Term
Describe the tilt of Earth's axis
Definition
Earth's axis is tilted at 23.5 degrees.
Term
What is a season?
Definition
A pattern of weather and temperature trends.
Term
What causes seasons?
Definition
The tilt of the Earth towards the sun.
Term
How does the tilt of the Earth's axis and the Earth's movement around the sun cause seasons?
Definition
When the North Pole tilts away as the Earth revolves around the sun, it is Winter. When the Earth's South Pole tilts away from the Sun, it is Summer in the northern hemisphere.
Term
What is an equinox?
Definition
Sunlight shines equally on both hemispheres.
Term
What is a solstice?
Definition
The time in the year when the northern hemisphere gets the most sunlight.
Term
When does the equinox happen?
Definition
Fall (September) and Spring (March)
Term
When does the solstice happen?
Definition
December (Northern Hemisphere gets the least amount of light) and June (Northern Hemisphere gets the most amount of light).
Term
What are tides?
Definition
Daily changes in the level of ocean water.
Term
What causes tides?
Definition
The Sun's and moon's gravitational pull on Earth.
Term
What is a tidal range?
Definition
Difference between ocean water levels at high and low tide.
Term
First quarter moon
Definition
When half the moon is in the sunlight.
Term
Gibbous Moon
Definition
Near side of the moon is more than half lit but not fully lit.
Term
Third quarter Moon
Definition
When the near side of the moon is again only half in sunlight.
Term
New Moon
Definition
Near side of the moon is unlit
Term
How long is our moon cycle?
Definition
27 days
Term
What keeps the moon orbiting around Earth?
Definition
Earth's gravitational pull on the moon
Term
Lunar Eclipse
Definition
Earth is in between the Sun and the Moon. The shadow on the moon is the Earth.
Term
Solar Eclipse
Definition
Moon blocks the Sun.
Term
What is a penumbra?
Definition
Lighter shadow during an eclipse.
Term
What is the Umbra?
Definition
The darkest part of a shadow during any type eclipse.
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