2nd Semester test review

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2nd Semester test review
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1. What is the speed of a plane that flies 7200
km in 8 hours? A. 7280km-hr B. 900 km/hr
C. 57,600 km/hr D. 90 km-hr E. 800 km/hr
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Speed distance/time
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S DISTANCE TIME
S 7200 / 8
S 900 km/hr
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1. What is the speed of a plane that flies 7200
km in 8 hours? A. 7280km-hr B. 900 km/hr
C. 57,600 km/hr D. 90 km-hr E. 800 km/hr
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2. What is the acceleration if a car goes from 0
to 50 m/sec in 5 seconds? A. 55 m/s2
B. 250 m/s2 C. 100 m/s2 D.
10 m/s2 E. -55 m/s2
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ACCELERATION
How fast you speed up.
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a Vf - Vi T
a 50 - 0 5
a 10 m/s2
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2. What is the acceleration if a car goes from 0
to 50 m/sec in 5 seconds? A. 55 m/s2
B. 250 m/s2 C. 100 m/s2 D.
10 m/s2 E. -55 m/s2
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3. According to Newton (Laws of Motion) an
object that is moving A. Gradually slows
B. Stops C. Keeps gaining speed D. has no
inertia E. Keeps moving until something changes
it
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• Newtons 3 laws of motion
• All objects have Inertia
• F ma
• Equal and opposite reaction

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3. According to Newton (Laws of Motion) an
object that is moving A. Gradually slows
B. Stops C. Keeps gaining speed D. has no
inertia E. Keeps moving until something changes
it
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4. Which falls to earth fastest? (no air
resistance -wind) A. Bowling ball B.
Basketball C. Baseball D. Marble E.
All fall at the same rate
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Gravity pulls with the same force on all objects.
Air resistance slows them down.
10 m/s2
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4. Which falls to earth fastest? (no air
resistance -wind) A. Bowling ball B.
Basketball C. Baseball D. Marble E.
All fall at the same rate
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5. A boat (in water) with a density overall of
1.3 g/cc willA. Float B. SinkC. Tip
over D. bob up downE. Cant tell from
this information.
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lt 1 floats gt 1 sinks
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5. A boat (in water) with a density overall of
1.3 g/cc willA. Float B. SinkC. Tip
over D. bob up downE. Cant tell from
this information.
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6. Air pressure is lowest (because of fewer
particles)A. High in the atmosphereB. Low in
a valleyC. At sea levelD. Deep in a mine
shaftE. In a scuba divers tank
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Fewer particles at the top.
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6. Air pressure is lowest (because of fewer
particles)A. High in the atmosphereB. Low in
a valleyC. At sea levelD. Deep in a mine
shaftE. In a scuba divers tank
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Push in anywhere and the force goes everywhere.
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7. The cycle of heated air rising then cooling
and falling is an example of A. conduction B.
storm C.contraction D. convection E.
radiation
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• 7. The cycle of heated air rising then cooling
  and falling is an example of
• conduction B. storm C.contraction
• D. convection E. radiation

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8. What is the name of the ancient supercontinent
that contained all the land on Earth?A.
Gondwanaland B. RussiaC. PangaeaD.
EgyptE. Laurasia
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8What is the name of the ancient supercontinent
that contained all the land on Earth?A.
Gondwanaland B. RussiaC. PangaeaD.
EgyptE. Laurasia
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9. A machine makes a job 5 times easier. Five
is theA. Power ratioB. Work needed to do the
jobC. MomentumD. ResistanceE. Mechanical
Advantage
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Its easierbut we have to pull farther
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A machine makes work easier.
There is certainly an advantage to using a
machine!!!
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9. A machine makes a job 5 times easier. Five
is theA. Power ratioB. Work needed to do the
jobC. MomentumD. ResistanceE. Mechanical
Advantage
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10. Volcanoes and Earthquakes most often
occurA. In the winterB. At the edge of the
platesC. After a violent stormD. Following a
sunspotE. In the ocean water
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10. Volcanoes and Earthquakes most often occurA.
In the winterB. At the edge of the platesC.
After a violent stormD. Following a sunspotE.
In the ocean water
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11. Why should you stay away from beaches after
an Earthquake?A. Aftershocks may occur
B. Many fires can break out
C. Tsunamis can hit the areaD. Water becomes
pollutedE. Lightning can be severe
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11.Why should you stay away from beaches after an
Earthquake?A. Aftershocks may occur
B. Many fires can break out C.
Tsunamis can hit the areaD. Water becomes
pollutedE. Lightning can be severe
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12.
What country put the first man in space?

• A. United States
• B Russia
• C. China
• D. Australia
• E. France

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Russia
United States
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12.
What country put the first man in space?

• A. United States
• B Russia
• C. China
• D. Australia
• E. France

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13. A current will flow through aA. Parallel
circuitB.. Series circuitC. Any closed
circuitD. Light bulbsE. All of these
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Circuit CLOSED LOOP
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Series Circuit
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Series Circuit
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Parallel Circuit
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Parallel Circuit
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Current in a lightbulb
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13. A current will flow through aA. Parallel
circuitB.. Series circuitC. Any closed
circuitD. Light bulbsE. All of these
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Ohms Law
V
I
R
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14. A hair dryer has a resistance of 200 ohms
and a voltage of 100 volts. What current is
needed?A. .5 ampsB. 200 ampsC. 20,000
ampsD. 2 ampsE. 5 amps
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I V R
I 100 200
I .5 amps
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14. A hair dryer has a resistance of 200 ohms
and a voltage of 100 volts. What current is
needed?A. .5 ampsB. 200 ampsC. 20,000
ampsD. 2 ampsE. 5 amps
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V
I Current (amps) of electrons per second
I
R
V Voltage (volts) Push or force on the electrons
R Resistance (ohms) Force trying to stop the
electrons
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15. The amount of push in an electric current is
theA. VoltageB. AmperageC. ResistanceD.
PowerE. speed
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Compare electricity to FOOTBALL
offense

defense
Score
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15. The amount of push in an electric current is
theA. VoltageB. AmperageC. ResistanceD.
PowerE. speed
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The part of the cell which carry the hereditary
traits are theA. Cell membraneB. GenesC.
MitosisD. ProteinE. brain
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The part of the cell which carry the hereditary
traits are theA. Cell membraneB. GenesC.
MitosisD. ProteinE. brain
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POWER
P work/time P joule/sec
Horsepower
watts kilowatts
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16. Which is not a unit of powerA.
N-m/sec(orJ/S)B. HorsepowerC. m/s2D.
KilowattE. Watt
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17. The poles of a bar magnetA. Are the
weakest partB. Point to the NorthC. Are
concentrated in the middleD. Are at the endsE.
Get stronger over time
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Magnets
North South Pole
Pole
Ends are the strongest.
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17. The poles of a bar magnetA. Are the
weakest partB. Point to the NorthC. Are
concentrated in the middleD. Are at the endsE.
Get stronger over time
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18. The North Magnetic poleA. Attracts the
North end of a magnetB. Moves around a little
on the EarthC. Switches ends of the Earth
occasionallyD. Is in
Canada (1600 km away from the geographic North
Pole))E. All of the above
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Poles of the Earth
Geographic North Pole
Magnetic North Pole
1600 km apart
Canada
North end attracts North
Moves and flip flops
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18. The North Magnetic poleA. Attracts the
North end of a magnetB. Moves around a little
on the EarthC. Switches ends of the Earth
occasionallyD. Is in Canada (1600 km away from
the geographic North Pole))E. All of the above
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19 Unlike poles of 2 magnets willA. Attract
each otherB. Repel each otherC. Produce
electricityD. Cancel each otherE. Attract
then repel each other
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Opposites attract
N
S
N
N
Likes repel
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19 Unlike poles of 2 magnets willA. Attract
each otherB. Repel each otherC. Produce
electricityD. Cancel each otherE. Attract
then repel each other
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20. Which of these would NOT help solve water
pollution?A. No-till farmingB. Seal up
landfill bottomsC. Carefully using
fertilizersD. Protecting food chainsE.
Cooling water from factories before releasing
into rivers.
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20. Which of these would NOT help solve water
pollution?A. No-till farmingB. Seal up
landfill bottomsC. Carefully using
fertilizersD. Protecting food chainsE.
Cooling water from factories before releasing
into rivers.
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Ecosystems on Earth that have similar climates
and life areA. continentsB. countriesC.
biomesD. deciduousE. Primary succession
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Ecosystems on Earth that have similar climates
and life areA. continentsB. countriesC.
biomesD. deciduousE. Primary succession
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22. The plant process that returns water to the
air is A. evaporationB. photosynthesisC.
condensationD. precipitation.E. transpiration
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22. The plant process that returns water to the
air is A. evaporationB. photosynthesisC.
condensationD. precipitation.E. transpiration
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WAVES
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Wavelength
Distance from crest to crest
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Amplitude
Loudness
Height of wave
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Frequency is the number of waves that pass in one
second.
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HIGH Frequency high pitch
Low Frequency Low pitch
Meow
Roar
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Speed of a Wave
Wave speed frequency x wavelength
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Wave speed frequency x wavelength
20 f x 4
f 5 waves/second
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23. Frequency determines theA. SpeedB.
WavelengthC. AmplitudeD. PitchE. Loudness
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HIGH Frequency high pitch
Low Frequency Low pitch
Meow
Roar
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23. Frequency determines theA. SpeedB.
WavelengthC. AmplitudeD. PitchE. Loudness
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Frequency is the number of waves that pass in one
second.
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Amplitude
Loudness
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24. Electricity is the flow ofA. ProtonsB.
ElectronsC. NeutronsD. AtomsE. Ions.
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Atomic Particles
Proton
Neutron 0
Electron -
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24. Electricity is the flow ofA. ProtonsB.
ElectronsC. NeutronsD. AtomsE. Ions.
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24. The plant proccess that returns water to the
air is A. evaporationB. photosynthesisC.
condensationD. precipitation.E. transpiration
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25. Electrons are NOT responsible forA.
MagnetismB. ChargeC. ElectricityD.
Conductivity bondingE. Gravity
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Electrons
Spin magnetism
charge of ion
Move electricity
Properties conductivity bonding
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25. Electrons are NOT responsible forA.
MagnetismB. ChargeC. ElectricityD.
Conductivity bondingE. Gravity
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Good Luck
THINK reason