Transcript nuclear fusion

ES Pre-Post Test Review
Eric Angat
Teacher
Precession
is caused
by
theuneven
Precession
causes
our northern
gravitation
star to change every
al thousand
pull. years.
few
Currently POLARIS
is our northern star.
1. Why does Earth
experience
precession?
The moon’s orbit is tilted from the
Earth’s elliptical plane. The Earth is
unevenly pulled by the moon’s gravity.
There are
seasons
because
earth is
tilted on
its axis.
2.What causes
seasons on
Earth?
The tilt of the Earth’s axis and its
revolution around the sun
produces seasons and not the
distance.
The sun is
powered
by the
process of
nuclear
fusion.
nuclear
fusion
happens when
4 hydrogen
atoms fuse
together to
form helium
and sunlight.
3. How does the
Sun produce its
H
energy?
H
Four Hydrogen ( H ) nuclei combine
through nuclear fusion into
helium (He).
Sunlight
Is necessary
for
photosynthesis
to happen.
4. How is solar
energy essential
to plants?
Solar energy is converted to chemical
energy called photosynthesis.
( photosynthesis-plant produce food).
5. How does the sun’s
energy affect food
webs on Earth?
Sunlight stimulate plant
cells to produce food by
photosynthesis. Without the
food produced by plants,
herbivores will die, followed
by the carnivores, then
omnivores.
6. How does the
subduction of
crustal plates
influence the rock
cycle?
underground
The processes of heating and
melting of rocks produce new rocks.
7. Why are seismic
waves of an
earthquake more
strongly felt at the
epicenter of an
earthquake?
because the epicenter is directly above
the focus, the place inside the earth
where the earthquake starts
8. Based on
the picture,
Approximately
when did the
fault occur?
Faulting occurred after layer B
was deposited
9. Which among the
alternative supply of energy
is non renewable?
Nuclear energy
is the only
alternative type
of energy that is
non-renewable.
10. Why are wind, water, and
gravity major agents of erosion
rather than weathering?
Erosion involves
movement of earth
materials from one
location to another
11. The best way to solve the
problem of wetland erosion is
____________.
add sediments, plantings,
monitor plantings
12. How can contour plowing
prevent mass-movement events?
Contour plowing slows down
run off and erosion.
13. How does the replacement of
large land areas with concrete
and asphalt affect the land?
Concrete and asphalt increase erosion of
sediments by increasing runoff, erosion, and
flooding.
14. Why does mining of coal and other
natural resources often result in
environment pollution?
Mining creates waste material which
can flow into streams and pollute
lakes.
15. Of the following, which
energy source produces the
least amount of solid waste?
a. coal
natural
gas
is
b. natural gas
used for
c. oil
d. peat
cooking and
is odorless.
16. How is the balance of heat
energy maintained in the oceans?
Heat energy is cycled by currents
between the equator and the polar
regions.
17. In what type of soil would seepage
of groundwater into streams occur the
slowest?
a. fine sand
c. gravel
b. fine
fine clay
clay
d. silt
18. How would several wells in a given
area affect the balance of groundwater
recharge and discharge?
Recharge
Deep well
The wells would deplete the
groundwater which is usually supplied
by percolation from rain( recharge).
19.When a
sewer pipe
breaks near a
stream which
would most
likely occur?
The stream will decrease in dissolved oxygen
because sewage contains biodegradable
materials that can cause the increase of bacteria
that uses dissolved oxygen ( eutrophication).
20. Why do planes
fly in the
stratosphere, the
second-lowest layer
of the atmosphere?
Airplanes fly in stratosphere to
avoid storms and other weather
events.
21. What is the
relationship between
air pressure and
altitude?
The higher you
go the lower
the air
pressure, the
lesser the air.
22. The earth’s
atmosphere is
mainly composed of
which three gases?
78% Nitrogen, 21%
Oxygen, and Argon, CO2
23. How does a cold front
form?
Cold air advances, forcing warm
air to rise forming
cumulonimbus clouds.
24. How are
hurricanes and
tornadoes related
to air masses?
They form where cold
air mass meets warm
air mass.
25. Which
direction is the
wind blowing
at this weather W
station?
N
northeast
S
E
Temperature=76
Air Pressure=138
Dew point=55
26. On an August afternoon
in North Carolina, the
barometric pressure is 29.92
inches and falling. What
weather condition is likely to
happen?
Precipitation or even an
imminent storm is coming if the
air pressure is decreasing.
27. Where would the highest
amounts of acid rain most likely
be found? Rural or Urban(city)?
In urban areas because
of non-point pollution.
28. What is the major
difference between
weather and climate?
time
29. the average
temperature in Raleigh,
NC over the past 30 years.
Is this an example of
weather or climate?
climate
30. What human activity that would be the
most destructive to the biodiversity of the
biosphere?
The removal of plants
from the food webs that
they support would ruin
biodiversity.
What alternative energy
technology could take advantage of
land and sea breezes in coastal
North Carolina?
wind farms
or wind
turbines