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![Page 1: Semester 1 Exam Review 2014-2015. Exam Review This review will cover most of the questions on your semester review, but not all of them. If you complete.](https://reader031.fdocuments.in/reader031/viewer/2022012922/56649e3f5503460f94b2fa4e/html5/thumbnails/1.jpg)
Semester 1Exam Review
2014-2015
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Exam Review• This review will cover most of the questions on
your semester review, but not all of them.
• If you complete 90% of your review packet by Friday, you will get to use an index card on the exam.
• Index cards must be issued by your teacher and have his or her initial, otherwise they will be confiscated.
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How do you write a hypothesis?
• In an if, then statement:– If I eat kale every day, then I will grow 6 inches
taller.
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How can scientists come up with different conclusions if they are looking at the same experiments and data?
Each scientist was able to fit the data together into a logical conclusion even though the resulting models were not identical.
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Ten Safety Rules?
• What are they?
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Name 3 International System of Units (SI) units.
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Name 3 International System of Units (SI) units.
• Grams• Liters• Meters
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Measures?
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Mass (amount of matter) of an object in GRAMS
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Measures?
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Length of an object in METERS, centimeters, or millimeters
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Measures?
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Volume of an object in LITERS
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Measures?
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Temperature of a substance in DEGRESS CELCIUS or
CENTIGRADE
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How do you calculate density?
Mass divided by volume
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How do you measure the volume of an irregular shaped object?
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What is the volume of this rock?
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The part of an experiment that remains the same that you compare your results to is
Control, controlled variable
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In a controlled experiment, how many variables should you test at
one time?
ONE
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Sponge Bob Clean Pants tested laundry soaps to see which would
work best to clean his pants.
What was the independent variable?
What is the dependent variable?
Laundry soap
How clear his pant were
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Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the green slime. Homer decides to check
this out by spraying half of the shower with coconut juice. He sprays the other half of
the shower with water.
What is the controlled variable?What is the independent variable?
Side with water
Side with coconut juice
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You are sitting in the cafeteria at lunch. You see a boy in a red shirt sitting by himself in the corner of the cafeteria.
quantitative observation?inference?
There is one boy
The boy is not feeling wellThe boy has no friends
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As frequency of a wave increases, what happens to the wavelength?
Wavelength will decrease or become shorter
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What causes you to hear a drum being played?
vibrations
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Which of the following types of waves require a medium?
a. Visible lightb. x-raysc. Microwavesd. Sound waves D
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The sun's rays that cause sunburn
ultraviolet
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Property of a wave?
Reflection
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Property of light shown?
Refraction
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Wavelength?
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Amplitude?
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When the frequency of a sound seems to change as the source moves in relation
to the listener, what is that called?
Doppler Effect
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Which of the following objects would sound travel through the fastest?
A. AirB. WaterC. IceD. Space
C
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You are at a gas station and see a mirror attached to the ceiling that allows you to see
the whole store. This is an example of a
Convex mirror
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Which property of light causes a rainbow to form after a rainstorm?
refraction
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A person is listening to a baseball game on their radio. Why do they hear the game
before someone who is at the game?
Electromagnetic waves (light) travels faster than sound
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What do dolphins use to locate things?
reflection
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What is happening when a person sees a red apple?
The apple is reflecting the color red and absorbing all the other colors of the spectrum
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In TRANSVERSE waves, the wave energy moves• parallel to the wave vibrations.• perpendicular to the wave vibrations.• opposite to the wave vibrations.• in the same direction to the wave vibrations.
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In LONGITUDINAL waves, the wave energy moves
• parallel to the wave vibrations.• perpendicular to the wave vibrations.• apart from the wave vibrations.• at right angles to the wave vibrations.
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What type of waves are sound waves?
longitudinal
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How does the speed of sound in water compare to the speed of sound in air?
The speed is faster because the molecules in water are closer to each other.
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What do waves transfer?
ENERGY
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Which type of electromagnetic wave has the greatest frequency?
• GAMMA RAYS
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Which type of electromagnetic wave has the longest wavelength?
• RADIO WAVES
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The law of conservation of energy states that when two objects collide, their
combined energy
Remains the same after the collision
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The water stored behind a dam is considered which type of energy?
Potential
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According to Newton’s first law of motion, a moving object that is not acted upon by a
unbalanced force will
Remain in motion
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To keep a heavy box sliding across a carpeted floor at constant speed, a person must continually exert a force on the box. This force is used primarily to
overcome which of the following forces?
The frictional force exerted by the floor on the box
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A bat strikes a ball into the outfield. If the action force is the bat hitting the
ball, the reaction force is
the ball hitting the bat.
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What will happen if you drop a feather and a pebble from the roof
of a house at the same time?
• The pebble will fall faster because air resistance affects it less.
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• When the paper on your desk is not moving, are the forces acting upon it balanced or unbalanced?
• balanced
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Two identical cars travel at 45 miles per hour toward the center of the intersection
(point A, as shown above) with equal force. The cars collide at the intersection. If after they collide the cars stick to each
other and move together, they will come to rest closest to
point:
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If there are no other forces pushing on the block, in which case is the acceleration of the block greatest?
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A board has been nailed in the center by a large nail. It is acted on by two forces in the direction shown by the arrows. Each force has the
same size, equal to 10N. Which picture shows the
forces that would cause the board to turn?
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Two dogs are tugging on a rope. The rope is not moving because the dogs
are pulling inopposite directions with equal force.
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How do you calculate Net Force?
• Add or subtract depending on the direction of the force
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A person throws a ping pong ball 10 m and then throws a basket ball 10 m. Which
throw requires more force and why?
• The basketball because it has more mass.
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A girl riding on a skateboard at 3 m/s suddenly hits the curb. The girl will
• fall forward at a speed equal to 3 m/s.