Download Semester Exam Review

Jeopardy
Scientific
Inquiry
Motion
Force
Energy
Electricity
Q $100
Q $100
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Q $200
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Q $300
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Q $400
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Q $500
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Q $500
Final Jeopardy
$100 Question from Scientific
Inquiry
Make one observation and one
inference about the image below.
$100 Answer from Scientific
Inquiry
Observation: Uses five senses
(what you see, hear, smell, feel, taste)
Inference: Based on observations and
prior knowledge
$200 Question from Scientific
Inquiry
How many significant figures are in
the following numbers?
0.001090
2,040
$200 Answer from Scientific
Inquiry
0.001090 = 4 sig figs
2,040 = 3 sig figs
$300 Question from Scientific
Inquiry
Rewrite the following number in
scientific notation:
0.000043
$300 Answer from Scientific
Inquiry
0.000043
4.3 x
-5
10
$400 Question from Scientific
Inquiry
How is a scientific law different from a
scientific theory? How are they the
same?
$400 Answer from Scientific
Inquiry
Law: short, describes, tells what will occur under
specific conditions
Theory: long, explains, tells how/why things work
Both: supported by data and repeated experimentation,
can be used to make predictions, can be
changed/modified with new discoveries
$500 Question from Scientific
Inquiry
Convert 254 mL to decaliters.
$500 Answer from Scientific
Inquiry
254 mL 1 L
1
1, 000 mL
1daL
10 L
= 0.0254 daL
$100 Question from Motion
How can you tell if an object is
moving?
$100 Answer from Motion
Look for a change in position when
comparing the object to a reference
point.
$200 Question from Motion
What is the difference between
distance and displacement?
$200 Answer from Motion
Distance measures the total length
traveled
Displacement measures the total
change in position
$300 Question from Motion
What is the difference between
speed and velocity?
$300 Answer from Motion
Speed: rate at which an object
moves; how fast it goes; s = d/t
Ex: 30 m/s
Velocity: speed and direction of an
object
Ex: 30 m/s east towards bridge
$400 Question from Motion
A cyclist turns a corner maintaining
a constant speed. Is she
accelerating? Why or why not?
$400 Answer from Motion
Yes, she is accelerating because she
is changing direction. Acceleration
is defined as a change in velocity.
Since velocity includes both speed
and direction, speeds up, slowing
down, or changing direction is
acceleration.
$500 Question from Motion
Explain how orbital motion works.
$500 Answer from Motion
Orbital motion is a form of projectile motion.
The space shuttle’s path curves around Earth due
to a combination or two motions happening
simultaneously:
Horizontal motion due to the force of the
shuttle’s engines launching it forward and
vertical motion due to the pull of gravity.
$100 Question from Force
What is the strongest type of
friction? When does it occur?
$100 Answer from Force
Static friction is the strongest,
and it occurs between two
surfaces at rest.
$200 Question from Force
Identify the net force and
resulting motion of an object
experiencing balanced forces.
$200 Answer from Force
Net force is 0 Newtons
There would be no change in
the motion
$300 Question from Force
When you sat your pencil on your
desk, the desk applies a reaction
force that is equal in strength and
opposite in direction. This is an
example of Newton’s ________ law
of motion.
$300 Answer from Force
Newton’s Third Law of Motion
$400 Question from Force
What is Newton’s Second Law of
Motion?
$400 Answer from Force
The unbalanced force required to
move an object is equivalent to the
objects mass times its acceleration.
F=ma
$500 Question from Force
Gravitational force depends on what
two factors?
$500 Answer from Force
Mass and distance:
Increase in mass = increase in
gravity
Increase in distance = decrease in
gravity
$100 Question from Energy
List the six simple machines
$100 Answer from Energy
Inclined plane
Wedge
Screw
Lever
Pulley
Wheel and axel
$200 Question from Energy
Gravitational Potential energy
depends on…
$200 Answer from Energy
Mass, height, and the acceleration
due to gravity
PE = mgh
$300 Question from Energy
What is the law of conservation of
energy in its simplest terms?
$300 Answer from Energy
Energy cannot be created or
destroyed.
$400 Question from Energy
After a man applies a 180 Newton
force to a steel beam, it does not
move. How much work was done?
$400 Answer from Energy
None. If the object does not move
due to the force, no work was done.
W=Fd
W = 180N x 0m
W = 0 Joules
$500 Question from Energy
When would the arrow in the image
below have the greatest amount of
potential and kinetic energy?
$500 Answer from Energy
Greatest PE= when bow is drawn
fully back
Greatest KE=right when bow is
relaesed
$100 Question from Electricity
Every charged object creates/emits
a(n)…
$100 Answer from Electricity
Electric field
$200 Question from Electricity
What two factors affect electric
force?
$200 Answer from Electricity
Amount of charge and distance:
Greater charge = stronger force
Greater distance = weaker force
$300 Question from Electricity
Describe what charge pairs create
attractive and repulsive forces.
$300 Answer from Electricity
Like charges repel and opposite charges attract.
If an object is (+) charged it has more protons
than electrons and will be attracted to an object
that is (-) charged, or has more electrons than
protons.
$400 Question from Electricity
Describe the difference between a
series and parallel circuit.
$400 Answer from Electricity
Series: one possible path for current
Parallel: multiple possible paths for
current.
$500 Question from Electricity
What is the relationship between
voltage, current, and resistance?
$500 Answer from Electricity
Ohm’s Law: V=IR
Increase in voltage = increase in
current
Increase in resistance= decrease in
current
Final Jeopardy
Patrick wants to see which brand of
mounthwash will kill the most oral
bacteria. Identify the appropriate
variable for this investigation:
1. Independent variable
2. Dependant variable
3. Controlled variables
4. Control group
Final Jeopardy Answer
1.
2.
3.
4.
Independent variable- brand of mouthwash
Dependant variable- amount of bacteria
killed/grown
Controlled variables- same mouth, same
time of day, same exposure to elements,
same growing conditions, same amount of
mouthwash
Control group- no mouthwash added