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G7 Physics Simple Machines

Name _____________________________________________________   Date __________________    Score _________

Questions

1.
Which of the following is NOT true?
20 points
  1. Bicycles are an excellent example of a simple machine.
  2. Bicycles are an excellent example of a complex machine.
 
2.
Where did Sadako Sasaki live?
20 points
  1. Tokyo
  2. New York
  3. Hiroshima
  4. San Francisco
 
3.
Why did Sadako Sasaki try to make 1,000 cranes?
20 points
  1. Hoping for good luck to win the lottery.
  2. Hoping for good luck to heal from leukemia.
  3. Hoping to send them to children in the US.
  4. Hoping to win a prize from the Crane Festival Committee.
 
4.
What does “123 FLE” mean?
20 points
  1. The strength of a lever
  2. The class of a lever
  3. The Law of Levers
  4. How to sharpen a flea file
 
5.
True or false: A Class 1 lever has the Fulcrum in the middle.
20 points
  1. True
  2. False
  3. Sometimes
 
6.
True or false: A Class 2 lever has the Effort in the middle.
20 points
  1. True
  2. False
  3. Sometimes
 
7.
True or false: A Class 3 lever has the Effort in the middle.
20 points
  1. True
  2. False
 
8.
What is the Law of Levers?
20 points
  1. $a^2 + b^2 = c^2$
  2. $M_1 \times D_1 = M_2 \times D_2 $
  3. $M_1 + D_1 = M_2 + D_2 $
  4. $M^1 \times D^1 = M^2 \times D^2 $
 
9.
What class of lever is a wheelbarrow?
20 points
  1. Class 1
  2. Class 2
  3. Class 3
  4. Class 4
 
10.
True of false: A pulley makes use of the Law of Levers.
20 points
  1. True
  2. False
 
11.
Which of the following is true about Mechanical Advantage?
20 points
  1. It is a measure of how much energy a machine uses.
  2. It is unrelated to the Law of Levers.
  3. It does not apply to bicycles because they are too complex.
  4. It is a measure of how much a machine multiples the force.
 
12.
Which of the following is NOT true?
20 points
  1. It is possible to lift ourselves up with a pulley.
  2. The more wheels in a pulley the faster it will lift an object.
  3. The more wheels in a pulley the slower it will lift an object.
  4. The more wheels in a pulley the easier it is to lift an object.
 
13.
True or false: All machines lose some energy due to friction.
20 points
  1. True
  2. False
 
14.
Which of the following is NOT a type of bridge design?
20 points
  1. Suspension
  2. Detention
  3. Beam
  4. Cantilever
  5. Arch
 
15.
Which bridge design is the most rigid and strongest over short distances?
20 points
  1. Suspension
  2. Detention
  3. Beam
  4. Cantilever
  5. Arch
 
16.
Which bridge design is the most flexible?
20 points
  1. Suspension
  2. Detention
  3. Beam
  4. Cantilever
  5. Arch
 
17.
What kind of bridge is the Golden Gate Bridge?
20 points
  1. Suspension
  2. Detention
  3. Beam
  4. Cantilever
  5. Arch
 
18.
What type of bridge is usually best for trains?
20 points
  1. Suspension
  2. Detention
  3. Beam
  4. Cantilever
  5. Arch
 
19.
What is a Hypothesis?
20 points
  1. The opposite of a Pioposis
  2. An idea about why something happens
  3. The hypocenter of the pothesis
  4. A point midway between the Fulcrum and the Load
 
20.
Which of the following are true about empirical ideas? (Choose all that apply.)
20 points
  1. They are true
  2. It is measurable
  3. It is experiential
  4. It is observable
 
21.
Who said, “Imagination is more important that knowledge.”
20 points
  1. Newton
  2. Galileo
  3. Kepler
  4. Einstein
 
22.
What is a Scientific Law?"
20 points
  1. Something scientists have proven is always true
  2. A counter-example
  3. The first stage of a theory
  4. The hypothesis in an experiment
 
23.
Which is true about a Scientific Theory?"
40 points
  1. It is a counter-example.
  2. It is the first stage of a hypothesis.
  3. It describes what happens in certain conditions.
  4. It describes why something always happens in certain conditions.
 
24.
Why is peer review an important part of the scientific method?"
40 points
  1. Peer review helps scientists find possible errors.
  2. Peers can help a scientist finish typing the report.
  3. Peer review includes helpful advise and nice compliments.
  4. Peers like to be part of the experiment every step of the way.
 
25.
Why is peer review an important part of the scientific method? (Choose all correct.)"
40 points
  1. Peer review helps scientists find possible errors in an experiment.
  2. Peers can help a scientist finish typing the report.
  3. Peer review includes helpful advise and nice compliments.
  4. Peers like to be part of the experiment every step of the way.
 
26.
In the Scientific Method, which of these is out of order?"
40 points
  1. Surprise and Wonder
  2. Experiment and Conclusion
  3. Questions and Hypothesis
  4. Publication and Peer Review
  5. Acceptance as a Scientific Fact
  6. Acceptance as a Scientific Law
 
Possible Points: 600
 

Solutions

  1.    Bicycles are an excellent example of a simple machine.
  2.    Hiroshima
  3.    Hoping for good luck to heal from leukemia.
  4.    It tells us the class of a lever.
  5.    True
  6.    False
  7.    True
  8.    $M_1 \times D_1 = M_2 \times D_2 $
  9.    Class 2
  10.    True
  11.    It is a measure of how much a machine multiples the force.
  12.    The more wheels in a pulley the faster it will lift an object.
  13.    True
  14.    Detention
  15.    Beam
  16.    Suspension
  17.    Suspension
  18.    Beam
  19.    An idea about why something happens
  20.    They are experiential, observable and measurable.
  21.    Einstein
  22.    Something scientists have proven is always true
  23.    It describes what happens in certain conditions.
  24.    Peer review helps scientists find possible errors.
  25.    a, b, c
  26.    b and c