Transcript 6th Grade Science CRCT Review

 An air mass forms over the Gulf
Of Mexico and moves northeast
across Georgia. What weather
conditions are likely to prevail in
Georgia?
Answer
•Warm and Humid
For
frost to be on the
grass in the morning, the
water vapor in the air must
do what?
•Condense and
freeze
Describe…….
The
floor of the
ocean…
Has mountains and
trenches.
Which
is the warmest
climate zone?
Tropical
Zone
 On
most ocean shoreline, the
water rises slowly and covers
the land twice a day. What is
the movement called?
Tide
Cold
air masses that
form at high latitudes are
called…
Polar
air masses.
 Nearly
100 years ago, a large volcano
erupted in the South Pacific. The
following year, some northeastern cities
in the United States recorded
measurable snowfall every month of the
year. Most of the Northern Hemisphere
experienced a cold summer. What
explains how these events were
related?
 Atmospheric
dust from the
eruption caused a decrease in the
amount of solar energy reaching
Earth.
In
some years there are
more hurricanes than
usual. This is probably
because.
•The ocean is warmer
than usual.
At
the seashore late in the
afternoon on a hot, sunny day, a
person often feels a strong
breeze coming in from the
ocean. Which of the following is
the reason for the breeze?
• The heavy, cool air over the
ocean rushes in to replace the
warm air that rises over the
land.
Sunlight is not
currently used as a
major source of energy.
Why not?

 Economical ways to capture and
store large amounts of solar
energy have not been developed.
Which
contains the
greatest amount of Earth’s
freshwater?
HINT!

Glaciers and polar
ice cap

 The
weather forecast for a
valley is a temperature of 35*F
and light precipitation. Which
weather conditions are MOST
LIKELY to be found on the
mountain above a valley?
Freezing
temperatures and
snow
Where does most
water vapor in the
atmosphere comes
from?
Evaporation
oceans
from
• Suppose you are swimming in a lake
when a thunderstorm approaches.
Which of the following would be the
best way to protect yourself form
lighting?
Taking shelter in an
automobile.
Dew
is formed by
The
condensation of
water vapor.
Where do the salts in
the sea come from?

Weathering and erosion
of rocks.
 Which term refers to the area
at the seashore that is
underwater during high tide
and exposed to low tide?
Intertidal zone
Which
ocean current moves
perpendicular to the shore
and sometimes carries
swimmers out to the sea?
Rip current
Or Rip tide
There are three major zones in the
ocean: the middle, and the ocean
floor. Which form of ocean life
lives mainly in the middle zone?
Nekton
 Which
are the two dominant
elements in the Earths
atmosphere?
Nitrogen
oxygen
and
•Which are the two most
abundant elements
dissolved in sea water?
Na Cl
Sodium chloride
Which
of the following is
typical of a tropical
climate?
Warm,
moist air
The ocean tides are
caused by

The
sun and the
moon’s gravitational
pull. Mostly the
Moon’s.
High
spring tides
generally result from
The
alignment of
Earth, the Moon, and
the Sun.
The section of a
continent that lies just
off the shoreline and
extends beneath the
ocean is called the
continental
Shelf
•Which process is
the most
important to the
water cycle?
•Evaporation
 On
a hot, summer day, the wind
suddenly starts to blow, clouds
start to form, there is a brief
thunderstorm, and it becomes
cooler. What probably happened?
A
cold front
passed through
What
causes the outside
of the windshield of a car
to get icy on a cold autumn
night when there is no
rain?
Water vapor from
the air freezes on
the glass.
During the water cycle,
when water vapor
changes to liquid water, it
is called
Condensation
 Juana
designed an experiment to
determine whether the depth of water
in an container had an effect on how
quickly the water evaporated. In order
to carry out her experiment, which
variable would Juana need to change?
The
amount of
water in a container
In the morning, Mariah
noticed there was dew on
the grass. In the afternoon,
the grass was dry. What
most likely happened to
the water?
It went into the air.
Describe
the order of
seafloor features as you
move from the shoreline
to the deep ocean.
Continental Shelf to the
 Continental
slope to the
continental rise to the abyssal
plain to ocean trenches
Which
two physical
changes are essential
processes in the water
cycle?
•Evaporation and
condensation.
Which processes are
responsible for the
distribution of freshwater
in inland locations of
continents?
Moving
gravity
air masses and
 If
you could look at the deep
ocean floor, which is the best
description you would like to
see?
High
mountains
and deep valleys

Seattle, Washington is a highly populated
city surrounded by the Pacific coast in
the Northwest United States. Bismarck,
North Dakota is a highly populated city in
the North Central United States. They
are both located at about the same
latitude. Why does Seattle experience
much less sever winters then Bismarck?
The
Pacific Ocean
releases heat and
keeps Seattle
warmer.

While visiting the beach during summer
vacation, a sea breeze keeps you cool and
comfortable during the hottest part of the
day. Which BEST explains why this
happens?
►Warmer
air rising over
land allows cooler air
from the ocean to blow
inland
A is day…B is night
At
the beach, the water
and sand are not
absorbing and losing heat
equally. What MOST
LIKELY will occur?
Wind
 Form
a statement about
Earth’s heating patterns about
land and water.
Land
cools more
quickly than large
bodies of water.
 Which event will occur in this series
of meteorological events at an
oceanfront town?
 1. Bright, sunny day
 2. Night falls
 3. Land and ocean begin to loose heat
from sun.
 4. One {land or ocean} first reaches
a temperature that is equal to the
one of its surrounding
 5. High pressure front moves in over
the land.
Cool
land breeze
 Warm
air rising at the
equator and cold air sinking
at the poles in one reason
for which event?
Convection
currents
Warm air from a large body
of water rapidly moves into
a land area of cold air.
Which weather event is
MOST LIKELY to occur
were the two air masses
meet?
A thunderstorm
What is the cause of
most ocean surface
currents?
•The wind
Ocean waves are
created by all of the
following except one.
Which factor creates
currents, not ocean
waves?
Density
differences
• During a very hot, dry
summer day in Georgia the
ground water supply
decreases. During the same
time, what will happen to
the rate of flow in the
stream of Georgia?
•The rate of flow will
decrease.
• Which factor is MOST important
in determining how much
groundwater can be stored in
underground rock?
The
rocks porosity

Adalis measured the temperature
difference between two areas located
next to each other. She did this at
four locations around the state of
Georgia. Where is MOST LIKELY to
have the strongest winds?
Ocean and beach
• Jaylin researched the hourly
temperatures of an ocean and a land
mass near each other. Each morning
Jaylin discovered the ocean and land
had a similar temperature. For the
rest of the day the sun continues to
warm the ocean and land. During the
day, which direction will the wind
MOST LIKELY blow?
Toward
the land
What are midocean ridges?
They
are areas of
underwater mountain
chains located near
many active volcanoes.
When
ice forms in the
oceans, what happens to
the water found directly
underneath the newly
formed ice?
►It
becomes more salty

Tropical seas have a high
rate of evaporation.
Because of this, the
water in tropical seas will
have higher what?
Salt
concentrations
What is the main
cause of ocean
tides?

Gravitational
the moon
pull of
 Oceans
contain many
dissolved elements like
calcium, sodium, and chlorine,
and these elements plus others
combine to form the salts in the
oceans. Which of the following
sources is a major source of
calcium and sodium in oceans?
Weathering
and
erosion of rocks

These get washed into the
ocean…(run-off)
•Only 3% of the water on
Earth is freshwater.
About 60% of that water
is not available for man’s
use. Why is this?
•It is frozen
Humid,
tropical air rises over
the Atlantic Ocean near the
equator. As the air rises it
begins to circulate counter
clockwise. A low pressure
system develops and the
storm soon has winds
reaching over 120 km/hour.
What is this storm called?
•Hurricane
 As
residents of Georgia, our
weather is often influenced by
air masses that start over the
Gulf of Mexico. What type of
air masses should we expect
from the Gulf of Mexico?
 Warm and Humid air
What two conditions are
necessary for frost to form?

The air is saturated with water and
the temperature is 0 degrees C or
less.
• It is a warm summer night. The relative
humidity is 100%. From dusk until dawn, the air
temperature drops from 32*C to 18*C. What
would you expect to see in the morning?
Dew

At the start of a hurricane, strong winds
blew over the ocean causing more water
to evaporate. How did this effect the
hurricane?
The
hurricane became
stronger.
• Which is MOST LIKELY
to cause a hurricane?

Warm evaporated water from the ocean
 The
sun warms a large area of an ocean.
This causes a large amount of water to
evaporate into the air. Which weather
event might occur?

Hurricane

Warm evaporated moisture from an
ocean moved inland over a city. The
city is blocked on one side by a
mountain range. Which type of
weather characteristic is MOST
LIKELY to occur?
Rain

Why is the sun responsible for
making a car operational?
 Sunlight grew the plants long ago that
became the fossil fuel for cars.

What element is the main component
for most stars?
Hydrogen
What is
renewable
energy?
 Renewable energy refers to power
generated by a renewable source.
When the energy is generated, the
resource is not depleted or used
up. They are naturally replenished,
and can either be managed so that
they last forever
Give
3 example of a
renewable source of
energy?
 wind
power;
 solar power;
 biofuels;
 hydro-electric power (HEP);
 geothermal energy;
 tidal power; and
 wave energy.
What
is a renewable
resource?
A
natural resource is a renewable
resource if it is replaced by natural
processes at a rate comparable or faster
than its rate of consumption by humans
Give
3 examples of
renewable resources.
geothermal power
 fresh water
 Timber
 Biomass
 Paper
 Leather

What
is a non-renewable
resource?
A
non-renewable resource is a
natural resource which cannot be
produced, re-grown, regenerated,
or reused on a scale which can
sustain its consumption rate.
Give
3 examples of nonrenewable resources.
Coal
Petroleum/
Natural
gas
oil