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WorksheetsFinal Reviewer 2: Matter and Energy
Total questions: 60
Worksheet time: 30mins
What makes mass and weight different?
Mass is the amount of matter meanwhile weight is expressed in kg, lbs. and g.
Mass and weight are expressed in g, kg and lbs.
Mass is the amount of matter meanwhile weight is the force of gravity on an object's mass.
none of the choices
Which of the following is being used to identify if a certain object is a matter or NOT?
Weight
Density
Volume
Mass
Neil weighs 750 N on Earth. On Mars, the force of gravity is 38% of that on Earth. How much would Neil weigh on Mars?
285 N
285 kg
7 350 N
7 350 kg
Which of the following is being used to identify if a certain object is a matter or NOT?
Weight
Density
Volume
Mass
Neil weighs 750 N on Earth. On Mars, the force of gravity is 38% of that on Earth. How much would Neil weigh on Mars?
285 N
285 kg
7 350 N
7 350 kg
The ratio of gravitational force on Earth is 1:6. James has a mass of 84 kg on Earth. What is his mass on the moon?
84 kg
4 939 N
4 939 kg
16 N
Vaporization/ evaporation is the change of physical state from _______ to _______.
gas to liquid
liquid to gas
solid to gas
gas to solid
Dry ice on the kitchen counter has disappeared without a trace. Dry ice skips the liquid phase. It never "melts" instead turns directly into a gas. This is an example of what change of physical state?
Sublimation
Melting
Condensation
Deposition
If someone sprays perfume in front of the class, why is it that we can smell it even from the back?
because gas has NO definite shape but takes the container's shape
because gas has low density
because gas has NO definite volume
because gas can diffuse easily
Why do you feel cool when you sweat?
because the sweat takes energy from your skin to escape through evaporation
because sweat releases energy to your skin that cools you down when it escapes through evaporation
because sweat takes up energy from the surrounding air causing your skin to loose energy
all of the choices
Why does your drink get cold when you put ice on them?
because the ice takes up energy from your drink causing them to get colder
because the ice takes up energy from the surrounding air causing your ice to melt
because the ice needs energy to melt causing it to release energy to your drink
none of the choices
Which among the following is NOT true about liquid?
no definite shape
has definite volume
slight expansion during heating
none of the choices
What is it?
Pure Substance
Mixture
What is it?
Pure Substance
Mixture
When there is 2 or more atoms combined together
Element
Compound
Homogeneous Mixture
Heterogeneous Mixture
Evaporation is a process where liquid changes to gas_____________________
at the surface
throughout whole water
at any temperature
at boiling point
The higher humidity, the ________________________ the rate of evaporation of water
lower
higher
no change
changes
The correct application of water evaporation is everyday life are :
Using hair dryer to dry wet hair.
Fold the cloth half when hanging to dry.
Seafood like fish, squids and prawns are dried under the sun
Close the fan while we sweating
A student answered a math problem to find density with the following answer. What did he do wrong?
Find the density of an object with a mass of 16g and a volume of 2 cm3 .
216= 8 cm3g
The student forgot to show his work.
The student divided incorrectly.
The student did not use units in his set-up.
The student did not put use units in his final answer.
What is Energy?
The ability to do anything
The ability to cause change
The investigation of nature
A fact of life
What is an example of kinetic energy?
A bird sitting in a tree
A bouncy ball on the table
A car driving on the highway
A book on shelf
What is an example of potential energy?
A bowling ball rolling down a lane
A car parked in a lot
An apple falling from a tree
Sunlight heating up the atmosphere
Energy cannot be created or destroyed.
True
False
Total energy will always change in a system of objects.
True; energy is destroyed due to friction
False; energy cannot be destroyed, only transferred.
What is thermal energy?
Energy due to electric current
Energy that sound carries
The sum of the potential and kinetic energy of the particles that make up an object.
The energy that electromagnetic waves carry
What is an example of sound energy?
A thermometer heating up
Solar panels generating electricity
A guitar string being plucked
A machine in an assembly line
What is considered work in science?
When someone puts a lot of effort into a task
When an object moves in the direction of an applied force
When force is applied but no movement occurs
Work isn't used in science
What is the definition of friction?
A force that resists the sliding of two objects that are touching
A force that increases sliding between two objects
The change from potential to kinetic energy
A transformation from radiant to mechanical energy
Which of the following show a change from kinetic energy to potential energy?
A sled sliding up a hill
A ball that is thrown into the air
A car driving down a hill
A rubber band being stretched
Which of the following describes an energy transformation?
When energy is lost due to friction
An electric motor moving a car
A solar panel powering a home
A television projecting a show
What transformation occurs in a toaster?
Electrical to radiant
Electrical to thermal
Thermal to mechanical
Solar to electrical
What type of energy transformation occurs when a piece of wood burns?
Electrical energy is released as radiant energy
Stored chemical energy is released as thermal energy
Mechanical energy is stored as chemical energy
No transformation occurs
A plant turns thermal energy from the sun into chemical energy during photosynthesis. This is an example of a(n)...
Energy transformation
Matter transformation
Energy change
Physical Change
Energy from the sun is called...
Conduction
Rays
Radiation
Heat
Faster moving atoms and molecules are associated with...
Low thermal energy (cooler)
High thermal energy (hotter)
Which of the following is NOT a form of energy?
Thermal
Mechanical
Sound
Water
At what point does the biker have the greatest Kinetic Energy?
Point A
Point B
Point C
Point D
At what point does the biker have the greatest Potential Energy?
Point A
Point B
Point C
Point D
At what point does Potential Energy transform into Kinetic Energy?
Point A
Point B
Point C
Point D
Which of the following statements about a skier skiing down a steep slope is true?
His kinetic energy decreases and his potential energy increases
His potential energy decreases and his kinetic energy increases
His chemical energy increases
Both his potential and kinetic energy increases
Choose the source of energy
Wind
Water
Sun
Biomass
What is radiant energy?
Kinetic energy that results in the movement of molecules
Kinetic energy sent off in the form of electromagnetic waves.
The potential energy stored in the nucleus of an atom.
Energy produced by a radiator.
A simple machine made of a plank and fulcrum
pulley
lever
wheel & axel
Incline plane
wedge
What simple machine is in this image
Wedge
Lever
screw
wheel and axel
Incline plane
A simple machine which is uses a turning motion to tighten or make holes
pulley
lever
wheel & axel
screw
wedge
What simple machine is in this image
Wedge
Lever
screw
wheel and axel
Incline plane
A force is
an invisible energy that binds the universe together
Strong in my family
Only occurs between objects in the natural world
A push or pull exerted on an object
How can simple machines make work easier?
by decreasing the force needed to complete the task
by increasing the friction between the machine and the object
by adding more work on the object than originally applied
by removing the force of gravity on the object
A ramp is an example of a(n) _______.
inclined plane
fulcrum
force
lever
A doorknob is a simple machine made up of 2 circular objects of different sizes. When turning a doorknob, what type of simple machine is being used?
inclined plane
wheel and axle
wedge
pulley
Using the back of a hammer makes it much easier to remove a nail from a wooden board. What kind of simple machine would the hammer be classified as if you are using it for this purpose?
Wedge
Lever
Pullye
Inclined Plane
Workers push a heavy box up an inclined plane and onto a moving truck. Which best explains why these workers use an inclined plane?
It makes their work easier because it requires less effort.
It decreases the amount of work they have to do.
It increases the amount of friction necessary to do the task.
It makes the box weigh less.
Which is an example of someone using a simple machine to do work?
A boy runs across the field
A girl eats her sandwich
A banker counts money
A man pushes his trolley up the ramp
How can the lever be balanced?
Add weight to the right side
Move fulcrum right
Add weight to the left side
Move the heavier weight back
