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Grade 10 Unit 3 Term 2 The Earth-Moon-Sun System (Earth's days, years,…
Grade 10 Unit 3 Term 2 The Earth-Moon-Sun System
Earth's days, years, and seasons
What determines the length of a day?
Rotation
What determines the length of a year?
Revolution
What conditions are affected by the tilt of earth's axis?
Temperature
Daylight hours
Midnight sun
What causes seasons?
Equinox
September equinox
March equinox
Solstice
December solstice
June solstice
Moon phases and eclipses
How are earth, the moon, and the sun related in space?
Earth and the moon orbit the sun.
The moon orbits the sun.
How does the appearance of the moon change?
The monthly lunar phases
Full moon
Waning gibbous
Third quarter
Waning crescent
New moon
Waxing crescent
First quarter
How do lunar eclipse occur?
It occurs when one object in space cast a shadow onto another.
Umbra
Penumbra
How do solar eclipse occur?
During a solar eclipse, the moon passes between the sun and the earth so that the sun is partially or totally obscured.
Earth's tides
What are two kinds of tidal range?
Spring tides-the largest tidal range.
Neap tides-the smallest tidal range.
What causes tides?
Gravitational interaction between the earth and the moon.
What are high tides and low tides?
High tide is a water level that is higher than the average sea level.