Review for Benchmark
Presentation
•
Science
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8th Grade
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Easy
+1
Standards-aligned
Jeremiah Soper
Used 6+ times
FREE Resource
17 Slides • 15 Questions
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Review for Benchmark
Earth, Sun and Moon
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Open Ended
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Earth's Orbit
The Earth revolves around the sun in an ellipse.
It takes 365.25 days for the Earth to complete its revolution around the sun.
Every 4 years we add a day to the calendar (February 29th) to account for the extra 0.25 day every year. (Leap Year)
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Multiple Choice
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Multiple Choice
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Seasons
The seasons are caused by the tilt of the Earth in relation to the sun.
The North and Southern Hemispheres experience the opposite seasons.
For example, when the Northern Hemisphere is experiencing Summer, the Southern Hemisphere is experiencing Winter.
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Multiple Choice
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Summer
Occurs when the Earth is tilted towards the Sun.
Days are longer, and nights are shorter.
Receives direct sunlight so temperatures are warmer.
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Winter
Occurs when the Earth is tilted away from the Sun
Days are shorter, nights are longer.
Earth receives indirect sunlight, so temperatures are colder.
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Fall/Spring
The Earth is neither tilted towards or away from the sun.
Since the Earth isn't tilted in either direction, temperatures are moderate.
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Multiple Choice
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Solstices and Equinoxes
Solstices are days where Earth's axis is the tilted the most away or toward the Sun that it will ever be.
Equinoxes are days when Earth's axis is neither leaning toward or away from the Sun.
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Multiple Choice
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How the Moon Formed
About 4.5 billion years ago, an object the size of Mars collided with the semi-molten Earth.
The impact caused vaporized rock to fly into space that formed a ring around Earth.
Eventually, the rocks cooled and clamped together to form the Moon.
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Open Ended
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The Moon's Surface Features
Craters - Formed when objects from space crashed into the surface of the Moon.
Marias - Formed when lava flowed up to the Moon's Crust and solidified.
Highlands - Part of the Moon's Crust that were too high for the lava to reach.
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Multiple Select
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The Moon's Revolution
While the Earth is revolving around the Sun, the Moon is revolving around the Earth
It takes 27.3 days for the Moon to complete its revolution
But, since the Earth is also revolving, the moon need a just more than two days to get back to the New Moon phase.
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Open Ended
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The Moon's Rotation
Like the Earth, the Moon also rotates on its axis
It takes 27.3 days to complete its rotation on its axis.
Since the Moon revolves and rotates at the same rate, we always see the same side of the moon.
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Open Ended
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The Phases of the Moon
There are eight phases:
New Moon, Waxing Crescent First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, and Waning Crescent.
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Multiple Choice
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Solar Eclipses
Total: Can only be seen from the Moon's Umbra along the Path of Totality. The Moon appears to have completely covered the Sun.
Partial: Can only be seen from the Moon's Penumbra. The Moon appears to have covered part of the Sun, and the other parts are still visible.
Annular: The Moon is too far away from Earth, so an outer ring of the sun is still visible.
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Multiple Select
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Lunar Eclipses
Total: The Moon falls into Earth's Umbra so the Moon appears dark or red.
Partial: Part of the Moon falls into the Earth's Umbra so part of the Moon appears dark and the rest is lit up
Penumbral: The Moon falls into the Earth's Penumbra so most of the sunlight still reaches the Moon. These are barely visible.
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Multiple Select
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High and Low Tides
The difference of the strength of the Moon's gravity causes Earth's tides.
The difference cause tidal bulges on opposite sides of the Earth
High Tides occur during the tidal bulges and Low Tides occur between them.
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Multiple Choice
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Spring and Neap Tides
Spring Tide: Can only occur during a Full or New Moon. The Sun and the Moon's gravitational effects will combine to make higher high tides and lower low tides.
Neap Tide: Can only occur during a Quarter Moon. The Sun and Moon gravitational forces conflict with each other and High Tides are lower, and Low Tides are higher.
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Multiple Choice
Review for Benchmark
Earth, Sun and Moon
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