Show:
Short Answer
T/F
A/B/C/D
Fill in the blank
100
What is the main reason people use machines?
Machines make work easier and faster.
100
A knife is an example of a wedge.
True.
100
A wheelchair ramp is an example of this kind of simple machine: a. pulley b.wedge c. lever d. inclined plane
d
100
Flagpole is to pulley as nail is to
wedge
200
What kind of simple machine would you use to attach a banner to wooden wall?
Screw
200
You would move the load away from the fulcrum to make it easier to life the load.
False.
200
Which of the following is a technology? a. ipad b. a way to braid hair c. an assembly line d. all of the above
d
200
Seesaw is to lever as ramp is to
inclined plane
300
What are simple machines?
Machines that have few or not moving parts.
300
Which of the following are processes? a. assembling a folder b. a folder c. baking muffins d. pulley
a and c
300
Window shades are to pulley as bike is to ____
Wheel and axle
400
What two factors determine how much work it takes to do something?
force and distance
400
A fixed single pulley would NOT decrease the force needed to move a box upward.
True.
400
A heavy log is covering a hole. Which simple machine would you use to get it off? a. screw b. lever c.wheel and axle d. wedge
b
400
An inclined plane is used to raise or lower heavy objects over a _____ distance.
longer
500
What simple machines can be found in a can opener?
Wedge (cutting blade), Lever (handles), Wheel and axle (how it turns)
500
A doorknob is an example of a wheel and axle.
True.
500
During our simple machine challenge how many teams won? a. 2 b. 3 c. 1 d. 4
A.
500
_____ and ____ are tools that workers could use as they turn a live tree into a wooden table.
axe- cut tree down gears- chain saw inclined plan- pulley- raise tree wedge- slice tree screw- connecting tree parts