SCI-3
KES - Purpose of Simple Machines
Exam not valid for Paper Pencil Test Sessions
[Exam ID:0PEZEF
1
A simple machine makes work easier because using it —
A changes the weight of something heavy
B takes less force to move something heavy
C lets something become a different shape
D improves the way something looks
2
A girl loves to ride her skateboard after school. What type of simple machine does she use?
A Lever
B Pulley
C Wedge
D Wheel and axle
3
A student needs to load a heavy box into the moving van. Which simple machine should he use to make his work easier?
A Screw
B Lever
C Wedge
D Inclined plane
4
A boy's dad is building a tree house for the boy and his sister. Which simple machine will hold the roof in place?
A Inclined plane
B Screw
C Wedge
D Lever
5
Directions: Type your answer in the box.
Which number from the list is the best type of simple machine to use for lifting a heavy object with a rope?
6
Directions: Type your answer in the box.
What number represents the simple machine being used to chop wood?
7
Which figure will need the least amount of force to lift the ball?
A
B
C
D
8
Which part of the workman's body is acting as a fulcrum?
A Chest
B Waist
C Leg
D Shoulder
9
A student is using a broom to sweep the floor. What simple machine is he using?
A Lever
B Inclined plane
C Wedge
D Screw
10 Which inclined plane will make it easier for a student to lift boxes into a moving van? (1 in = 1 ft)
A
B
C
D
11 Which of the following pictures shows how a wedge works?
A
B
C
D
12 A student wants to look under a heavy rock. Which simple machine would be BEST to use to lift the rock?
A Screw
B Lever
C Inclined plane
D Wheel and axle
13 Which task would be made easier by using a wheel and axle?
A Cutting a piece of wood
B Biting an apple
C Raising a window shade
D Opening a door
14 In which of these examples is work NOT being done?
A
B
C
D
15 A simple machine —
A makes work easier
B makes work last longer
C does not change work
D makes work harder