Cells And Simple Machines Review
What do you remember about Simple Machines? ? ?
- 1.What is the main purpose of a wedge? (work it does)
- A.
Push things apart
- B.
Push things together
- C.
Move away from objects
- D.
Lift objects
- 2.This is necessary to get an object moving...
- A.
Friction
- B.
Force
- C.
Resistance
- D.
Wedge
- 3.A rod attached to the center of a wheel is called:
- A.
Magnet
- B.
Wedge
- C.
Inclined plane
- D.
Axle
- 4.Cranes, flagpoles, and window blinds are examples of what type of simple machines?
- A.
Inclined Planes
- B.
Wedge
- C.
Pulley
- D.
Wheel and axle
- 5.When you increase the distance of a moving object on an inclined plane ...
- A.
Less force is needed to move an object
- B.
More force is needed to move an object
- C.
The amount of force does not matter
- D.
There is no reason to worry about the longer distance, because it will not make a difference in the amount of work is done
- 6.Using multiple pulleys would reduce the amount of force needed in order to do the work of the object.
- A.
True
- B.
False
- 7.What type of simple machine is found on the cap of a pickle jar?
- A.
Wedge
- B.
Wheel
- C.
Screw
- D.
Pulley
- 8.A device that has two or more simple machines working together
- A.
Complete machine
- B.
Independent machine
- C.
Complex machine
- D.
Simple machine
- 9.Work is done when a force is applied over a distance.
- A.
True
- B.
False
- 10.Screws and wedges are examples of an inclined plane.
- A.
True
- B.
False
- 11.Which simple machine would most likely be used to move an object over great distances and on a flat surface?
- A.
Wedge
- B.
Wheel and axle
- C.
Inclined plane
- D.
Pulley
- 12.A door knob would be what type of simple machine?
- A.
Wheel and axle
- B.
Pulley
- C.
Lever
- D.
Wedge
- 13.Which of the following items would be considered as a(n) wheel and axle?
- A.
Nutcracker
- B.
Axe
- C.
Windmill
- D.
Screwdriver
- 14.Which of the following would not be using mechanical advantage ?
- A.
Using your hand to open a jar
- B.
Using a pulley to raise a flag on a flagpole
- C.
Use a crowbar to lift a heavy rock
- D.
Using an axe to cut through a log
- 15.Which of the following would not be an example of a screw, simple machine object?
- A.
Nuts and bolts
- B.
Jar lid
- C.
Light bulb
- D.
Wheelbarrow
- 16.When a screwdriver is used to open a can of paint, what is the fulcrum in this specific example?
- A.
Your hand
- B.
The edge of the paint can
- C.
Lid of the paint can
- D.
The screwdriver
- 17.Where would you find the fulcrum on a seesaw?
- A.
On the left side
- B.
On the right side
- C.
In the middle
- D.
On the top
- 18.The fulcrum of a lever is the same as an axle on the wheel and axle, simple machine.
- A.
True
- B.
False
- 19.Tweezers are a great example of a third class lever.
- A.
True
- B.
False
- 20.All cells are multicellular.
- A.
True
- B.
False
- 21.Prokaryotic cells do not have a nucleus
- A.
True
- B.
False
- 22.Based on the Cell theory, all cells come from existing _____________.
- 23.Cells are the simplest form of life.
- A.
True
- B.
False
- 24.All of the following are cell characteristics, identify which type of cell it would be? - Cell Membrane -Cytoplasm -Ribosomes -DNA
- A.
Prokaryotic Cells
- B.
Eukaryotic Cells
- C.
Both Prokaryotes and Eukaryotes
- D.
None of the above
- 25.The nucleus acts as the control center for the Eukaryotic Cell.
- A.
True
- B.
False
Questions: 25 | Attempts: 138 | Last updated: Mar 20, 2022
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