WorksheetsThird Monthly Examination in Science 5
Total questions: 60
Worksheet time: 1hrs 5mins
_______ Is defined as the ability to do work or make things happen.
Work
Energy
Power
Forces
______ Is done when a force (N) causes an object to move a certain distance (m).
Energy
Work
Power
Force
Energy is measured in Newton- meters or _________.
Kelvin
Joules
Newtons
Watts
What is the formula for work?
F = M(A)
KE = 1/2M (V)2
W = F(D)
Power = W/T
Which requires more work – a person walking up stairs or a person running up stairs?
walking
they require equal work
running
no work is required for either because the movement is vertical
Which requires more power – a person walking up stairs or a person running up stairs?
walking
running
they require equal power output
no power is required at all
Calculate the value of the work when Janina walks 6m using a force of 200N.
(a)
Sheldon has a force of 500N running 100 meters in 20 seconds. calculate the power it uses.
(a)
Leonard has a mass of 40kg climbing stairs as high as 2m. Count the work he does.
(a)
Howard lifted a box weighing 5kg onto a 3m high cupboard in 10 seconds. Count the power he uses.
(a)
Superman flew 1000m in 15 seconds with a force of 600N. How much power does Superman has?
(a)
A girl weighs 400 N. She runs up a flight of stairs of height 5 m in 4 seconds. Her power is:
(a)
A 5000N block is lifted 10 m. How much work was done?
(a)
d=10 m
F=???
If 150 Joules of work is needed to move a box 10 meters, what force was used?
1500 N
15 N
1.5 N
150 N
What is the equation for work?
(a)
If you push a cart with a force of 60 N for 2m. How much work have you done?
(a)
What is the equation for power?
(a)
It is the rate at which work is done.
Power
Force
Energy
Work
Which of the following is the best example of work being done?
studying for a rest
carrying groceries into your house
holding a box
lifting a box
Amy is pushing a trolley over a distance of 5 m with a force of 10 N. What is the total work done by Amy?
(a)
Lisa pulling a drawer over a distance of 50 cm with a force of 2 N. What is work done by Lisa?
(a)
Rose pulled a box up a smooth ramp from A to B with a force of 30 N over a distance of 2 m in 5 s. What is the power used by Rose to pulled a box up?
(a)
The mass of Jenny is 20kg. What will be the amount of work done by her if she climbs 20 stairs, each 25 cm high in 10 seconds?
900 J
1000 J
1080 J
980 J
When two or more simple machines work together, they become a -
combined machine
compound machine
complex machine
constructed machine
The bottle top is held in place using which simple machine?
wheel and axle
wedge
screw
inclined plane
A wedge would best be used to --
move an object faster
lift a heavy object
split a log
move a large object from a truck
Which two people are using a compound machine?
Firefighter use many tools to help people in need. What is the firefighter using to help open this car door?
Inclined plane
Screwdriver
Wedge
Lever
A wheel and axle makes it easier to --
lift heavy objects
cut or split objects
move or turn things
hold things together
This playground has several examples of a simple machine. The arrows are pointing to (a) .
A landscape company needs to spread new soil on a large garden. What compound machine would most likely be used by the landscapers?
Wheelbarrow
Scissors
Bicycle
Crowbar
Which two people are using pulleys?
The student wants to attach two pieces of wood together to make a swing seat that cannot be pulled apart. What simple machine would the student most likely use to attach the two pieces of wood?
Lever
Screw
Wedge
Rod
Scissors are made by combining which two simple machines?
(a)
What simple machine is most likely being used to lift the piano?
(a)
How does a knife act as a wedge to make work easier when eating?
It cuts food into smaller pieces.
It moves food around the plate.
It lifts soup to a person's mouth.
It sticks food together for a larger bite.
A family is moving a couch to a new house. Which of these simple machines would BEST move the couch from the driveway onto a truck?
Wheel and axle
Pulley
Wedge
Inclined plane
A hand-operated can opener is made up of two levers, a wedge, and a wheel-and-axle. Which best describes the can opener?
a simple machine
a compound machine
a screw
a force
Miguel uses a wheelchair. Which simple machine does Miguel most likely use to get past the three steps at the front entrance of his school?
wedge
screw
. lever
inclined plane
Which simple machine could be used to hold two objects together?
Which simple machines make up these garden shears?
(a)
Which simple machine is labeled C?
(a)
Which simple machine is labeled D?
(a)
Which simple machine is shown in the picture?
inclined plane
wedge
pulley
screw
Rick is doing a report on compound machines. Which is the best way to describe a compound machine?
a machine that is like a nail with threads wrapped around it
a machine that makes moving and lifting things easier
a machine made up of two or more simple machines
a machine made of two inclined planes back to back
A bicycle is a compound machine. What are two simple machines found in a bicycle?
wheel-and-axle and inclined plane
inclined plane and pulley
lever and wheel-and-axle
wedge and screw
This girl is using a compound machine.
Which two simple machines make up this compound machine?
inclined plane and pulley
fulcrum and lever
wedge and screw
. lever and wedge
select what is simple machine only.
select all that belong to compound machine.
There are ___________ simple machines.
4
5
1
6
This simple machine is...
an inclined plane
a pulley
a wedge
a lever
Machines make our lives ______________.
more difficult.
easier.
happy.
sad.
Simple machines have 1 or 2 pieces.
TRUE
FALSE
What are the six simple machines?
Name atleast five(5) complex/compound machines.
What's the difference between a simple and compound machines?
