

2nd Quarter Review
Presentation
•
Science
•
8th Grade
•
Medium
Sara Rittmeyer
Used 2+ times
FREE Resource
29 Slides • 39 Questions
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2nd Quarter Review
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Wind

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Why is there wind?
Differences in air pressure
Differences in air temperature (UNEVEN HEATING
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Air Pressure
Cold air has more pressure
Cold air is more dense and has more molecules. It will sink.
Warm air has less pressure
Warm air is less dense and has less molecules. It will rise.
High to Low is the only way to go! (air moves from high pressure to low pressure)
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Why Do Global Winds Curve?
If Earth did not rotate, these winds would blow in straight lines. However, because the Earth does rotate, the winds follow curved paths.
The Earth’s rotation is called the Coriolis effect
As Earth rotates, places near the equator travel faster than places closer to the poles.
This difference in speed causes the Coriolis effect.
Wind moving from the poles to the equator is deflected to the west.
Wind moving from the equator to the poles is deflected east.
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Multiple Select
Which are true?
Cold air has higher pressure
Cold air has lower pressure
Cold air is more dense
Cold air is less dense
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Multiple Choice
How does air move?
From Low to High Pressure
From High to Low Pressure
From cold to warm air
In a circular current
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Multiple Choice
Why do winds curve?
Uneven heating
The earth rotates
Weather
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Multiple Choice
What direction does wind move?
From high pressure to low pressure
From low pressure to high pressure
Whatever direction is going to mess up my hair the most
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Ocean Currents
By Stefan Mejia-Ott
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Some currents are surface currents while other currents are much deeper.
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Surface currents are usually caused by the wind.
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Surface currents are affected by the spinning of the Earth, called the Coriolis Effect.
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Deep ocean currents are caused by a number of things including changes in the temperature and salinity (how salty the water is).
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Multiple Choice
The green saltwater sank because it is
More dense than the freshwater
Less dense than the freshwater
As dense as the freshwater
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Multiple Choice
Surface currents are caused by _____________.
Salinity
The Wind
The Sky
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Multiple Choice
Deep ocean currents are caused by
Temperature and Salinity
Fries and Ketchup
The Sun and the Earth
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The daily rise and fall of Earth's waters on shores.
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Multiple Choice
Currents in the southern hemisphere flow
Clockwise
Counterclockwise
To the stars
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Multiple Select
Surface currents are affected by _____________ (Select ALL that apply).
The rotation of the Earth (Coriolis Effect)
Wind
Continental Deflection
Salinity
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Water Cycle
Vocabulary Lesson
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The Water Cycle
The water cycle is the process through which water moves around the Earth.
It follows the path of water as it changes from a liquid to a vapor, or even into solid form.
The major stages of the water cycle are evaporation and condensation.
Temperature from the sun and the Earth drive the water cycle.
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Vocabulary
Precipitation: water in any form falls to Earth.
Evaporation: Water changes state from a liquid to a gas.
Condensation: Water changes state from a gas to liquid. (Clouds)
Transpiration: Water vapor (gas) is given off from plants.
Sublimation: Water changes state from a solid to a gas.
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26
Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
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Multiple Choice
Water in any form falls to Earth.
Condensation
Sublimation
Evaporation
Precipitation
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Multiple Choice
Water changes state from a liquid to a gas (requiring heat)?
Evaporation
Condensation
Sublimation
Precipitation
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Multiple Choice
Water changes state from gas to a liquid (releasing heat)?
Condensation
Sublimation
Evaporation
Precipitation
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Multiple Choice
What is the water cycle?
Water changes from a liquid to a gas.
The process through which water moves around the Earth.
The sun heats the ocean.
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Multiple Choice
Clouds form because of...
wind
punxsutawney Phil
condensation
Storm from X-Men
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Multiple Choice
The major stages of the water cycle are:
Sun and moon
Evaporation and condensation
Sublimation and explanation
Cereal and milk
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Multiple Choice
What drives the water cycle?
Heat (from sun)
Dale Earnhardt
Evaporation
Condensation
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Moon Phases, Eclipses, and Tides
By Heather Sanderson
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The phase of the moon we see is determined by where the moon is located as it revolves around Earth.
Some text here about the topic of discussion.
Moon Phases
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Multiple Choice
What phase of the moon would we see at 5?
Quarter moon
Full moon
New moon
Crescent moon
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Multiple Choice
When the moon becomes more illuminated it is said to be
Waxing
Waning
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Multiple Choice
What phase of the moon would we see at 1?
Quarter moon
New moon
Full moon
Gibbous moon
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Multiple Choice
As the moon goes from 1 to 5 it is?
Waxing
Waning
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A solar eclipse happens when the moon blocks out the suns light.
Solar eclipse can only happed during a new moon.
The umbra is the darkest part of the shadow cast.
Some text here about the topic of discussion.
Solar Eclipse
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A lunar eclipse occurs when the Earth comes between the moon and sun.
The moon turns red during a lunar eclipse
A lunar eclipse can only occur during a full moon.
Some text here about the topic of discussion.
Lunar Eclipse
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Different Shadows
UMBRA - the fully shaded inner region of a shadow cast by an opaque object
PENUMBRA - the partially shaded outer region of the shadow cast by an opaque object.
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Multiple Choice
A _________ is the blocking of the Sun's light that occurs during a new moon when the moon's shadow falls on earth.
solar eclipse
lunar eclipse
umbra
penumbra
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Multiple Choice
A solar eclipse only happens during the day.
True
False
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Multiple Choice
What moon phase is it during a solar eclipse?
Quarter Moon
Gibbous Moon
Full Moon
New Moon
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Multiple Choice
What type of eclipse is this?
Solar Eclipse
Lunar Eclipse
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Multiple Choice
What type of eclipse is this an example of?
Lunar Eclipse
Solar Eclipse
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Multiple Choice
For a solar eclipse to occur, the alignment must be ?
none of the above
Sun, moon, Earth
Earth, sun, moon
sun, Earth, moon
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When the sun, Earth, and Moon align causing the highest high tides and the lowest low tides.
Some text here about the topic of discussion.
Spring Tide
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Coriolis Effect
Why do global winds curve?
The Earth rotates
Think about what you saw happen with the balloon.
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Happens when the Sun, Earth, and Moon are at a 90 degree angle.
These tides have the least difference between high and low tides.
Some text here about the topic of discussion.
Neap Tide
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Multiple Choice
What type of tide creates the highest high tides and the lowest low tides?
Neap tide
Spring Tide
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Multiple Choice
What phases of the moon occur during a spring tide?
First quarter and third quarter
Gibbous and Crescent
Full and new
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Multiple Choice
Is this a spring or a neap tide?
Spring
Neap
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Types of Water Pollution
Toxic/Chemical - chemicals from industry or people
Sediment - dirt from construction
Nutrient - excess fertilizer (nitrogen/phosphorus)
Bacterial - untreated water, human/animal waste
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Point vs Non Point Source
Point Source - pollution from a single source that can be easily traced
Non Point Source - pollution from multiple sources that can't be easily traced, usually caused by run off
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Multiple Choice
What typically happens to cause water pollution?
condensation
transpiration
run off
evaporation
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Multiple Choice
Which type of water pollution is typically caused by a farmer using fertlizer?
Nutrient water pollution
Chemical pollution
Bacterial
Sediment
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Annular Eclipse
The Moon doesn’t cover the entirety of the Sun, even if the Moon’s completely centered in front of it. This happens because the Moon’s orbit is an elliptical and the Moon is closer to the Earth.
During this kind of eclipse, the bright ring around the Moon is called the “ring of fire.”
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Multiple Choice
Which type of pollution would be involved if a factory starts dumping waste into a nearby river?
chemical/toxic
nutrient
bacterial
sediment
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Blood Moons...
During a lunar eclipse, Earth gets in the way of the sun's light hitting the moon. The moon can also look reddish because Earth's atmosphere absorbs the other colors while it bends some sunlight toward the moon.
2nd Quarter Review
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