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WorksheetsProperties of Light and Electricity, 4-5
Total questions: 74
Worksheet time: 37mins
1. Light is —
power.
energy.
heat.
reversible.
The light energy that you can see is —
the visible spectrum.
a prism.
ultraviolet energy.
the opaque light.
What are three examples of objects that actually give off visible light?
the sun, the moon, a star
a flashlight, a battery, a light bulb
a candle flame, a match, a mirror
the sun, a flashlight, a candle flame
What factors must be in place before an object is visible?
It must either be a source of light or it must reflect light.
It cannot be a source of light.
It cannot reflect any source of light.
It must be a source of light that can never reflect light.
Why is it necessary to use a telescope to observe objects in outer space?
Telescopes gather more light and make the far away objects in outer space brighter and more visible.
Telescopes are long and thin and reach farther in the sky, this makes it easier to see in outer space.
Looking at objects in outer space without telescopes can cause damage to your eyes.
Looking through a telescope helps your eyes to focus on one area of outer space, without it you would not be able to pick just one object.
The brightness of light can be described as —
all the different colors of the light put together.
the intensity of the light or the total amount of energy.
the degree of electricity present in the light waves.
the ability to glow for long periods of time.
The moon’s orbit around Earth is not a perfect circle so sometimes the moon orbits slightly closer to Earth. Why do these close periods give us a brighter moon?
The closer the light source, the bigger and more intense the source becomes.
The closer the light source, the less light it emits and the more intense it becomes.
The closer the light source, the more intense different colors emit from the source.
The closer the light source, the brighter and more intense the light.
What does this diagram represent?
A. A prism – all of the colors of the rainbow pass through and join together to form white light.
B. A spectrum – white light passes through a prism and is separated into the different colors of the rainbow.
C. A rainbow – all of the colors join together to form the color sequence called “Roy G Biv”.
D. A refraction – all of the colors join together to shine brighter.
The visible spectrum is made up of what colors?
black, gray, brown, white
red, pink, blue, purple, violet, black, gray, brown
red, gold, silver, copper, blue
red, orange, yellow, green, blue, indigo, violet
A (a) separates the various colors that make white light.
microscope
mirror
prism
telescope
Why do some objects appear black?
Black absorbs all of the colors of white light.
All of the colors mix and form black.
All of the colors bounce off and leave black.
Black absorbs none of the colors of white light.
Why do some objects appear white?
Black absorbs all of the colors of white light.
White absorbs all of the colors of white light.
All of the colors bounce off and leave white.
All of the colors mix and form white.
The light energy that you can see is the visible spectrum. What is the correct order of colors in this spectrum?
red, orange, yellow, green, blue, indigo, violet
red, yellow, green, black, blue
orange, red, yellow, green, blue, purple
violet, indigo, red, orange, yellow, green, blue
How is a rainbow formed?
A. A rainbow forms when sunlight shines through raindrops. Raindrops bend sunlight.
B. A rainbow is formed when the rain gathers up all the different colors.
C. A rainbow is formed when a puddle shines a beam of light in an arch.
D. A rainbow is formed when clouds block out all the rest of the sky but the spectrum colors.
A ray of light contains all the colors of the spectrum. Objects appear different colors because they absorb certain colors and bounce other colors off the surface. Why does grass appear green?
The color green bounces off the surface, and the grass absorbs the other colors of white light.
The only color grass absorbs is green.
The colors of the spectrum mix together to form green.
The color green is the strongest of all the colors.
Refraction is a quality of light. Which statement describes refraction?
You can see your image in a mirror.
You can see images glowing brightly in the dark.
A straw in a glass of water seems to bend at the water’s surface.
You cannot see through all types of substances.
Which of the following bends light rays?
an electric charge
a flat mirror
a lens
a strong magnetic field
To view objects that are very far away you should use a —
microscope.
telescope.
graduated cylinder.
balance scale.
As light waves travel through a glass lens, they bend. What is this bending called?
vibration
reflection
refraction
translucent
When light rays are (a) , they are bent.
Reflected
Refracted
Scattered
Absorbed
An object's color is determined by the color of light it —
absorbs.
reflects.
produces.
radiates.
This diagram shows the process of —
reflection.
refraction.
diffraction.
absorption.
This diagram shows the process of —
reflection.
refraction.
diffraction.
absorption.
When looking into a mirror, you view an image of yourself because the light is (a) from the mirror’s surface.
reflected
refracted
absorbed
bent
If you try to spear a fish swimming in the water, it is easy to miss the fish because light rays bend when passing through clear objects. This is known as light —
reflection.
refraction.
bending.
scattering.
When light shines on an object and does not pass through it, the light is said to be —
absorbed.
refracted.
reflected.
returned.
Why do we have a shadow?
because light comes from all directions
because light travels in straight lines
because light bends around you
because light can travel through you
When an object produces a shadow, the light has been (a) by that object.
blocked
bent
absorbed
reflected
What causes a rainbow?
sunlight is reflected off the surface of Earth into bands of colored light
raindrops in the sky refract rays of sunlight into bands of colored light
the sun acts like a prism and splits its rays into bands of colored light
pollution in the sky reflects sunlight, creating bands of colored light
Which object is opaque?
wax paper
window glass
glass prism
textbook
Rachel completes the following chart after her science activity on light. What part of the chart below should she change to make it accurate?
A. She should move tin foil to transparent because it is like a mirror, and you can see your reflection.
B. She should switch wax paper and cellophane. You cannot see clearly through wax paper but you can through cellophane.
C. She should move wood to translucent because sometimes you can see through it.
D. She should leave her chart as it is; she has made all accurate placements.
Lindsey’s mom was burning a scented oil candle in the living room. Lindsey admired the clear blue color of the melted oil and saw that a pretty flower design decorated the bottom of the candleholder. The next day, after the candle had been put out, Lindsey wanted another look at the flower design. It was not visible. Why couldn’t she see it?
The hot oil burnt off the design and it was no longer present.
The cooled oil is transparent not translucent like the hot oil.
The cooled oil is opaque not translucent like the hot oil.
The hot oil created an imaginary image, there was no flower.
Laura likes to copy cartoon pictures by placing a sheet of paper on top of the cartoon and tracing. Today she stacked 5 papers together and tried to trace. Why can’t Laura get a good look at the picture she wants to trace?
The paper is not translucent. It is only transparent when stacked together.
The paper is opaque and cannot be used to trace over objects.
The increasing thickness of the papers makes the object more translucent.
The increasing thickness of the papers changes the translucent quality.
Objects that you can see through are called —
translucent.
transparent.
opaque.
colored.
Objects that let some light through are called —
translucent.
transparent.
opaque.
clear.
Objects that do not let any light through are called —
translucent.
transparent.
opaque.
insulators.
An object is called (a) if it will not allow light to pass through.
Opaque
Transparent
Translucent
Which item below can be classified as transparent?
aluminum foil
paper towel
wax paper
clear wrap
Which cup is transparent?
red plastic cup
white foam cup
brown plastic cup
clear plastic cup
Some devices that rely on electricity can also become a fire safety hazard because they change electricity into heat energy. Which of the following does NOT change electricity into heat?
hair dryer
toaster
oven
telephone
Electricity from power outlets and batteries allows many devices with many different uses to work. Which of the following statements is NOT true?
Hair dryers use electricity to produce light.
Computers use electricity for communication.
Televisions use electricity to show moving pictures.
Speakers use electricity to produce sound waves.
Telephones use electricity for —
movement.
communication.
light production.
heat production.
Electricity can be changed into which forms of energy?
light, weight, torque
light, heat, sound
light, movement, color
light, tone, volume
Which is an example of electricity being transferred into light and heat?
a light bulb
a burning candle
the sun
a fire fly
Some uses of electricity are —
making machines go and producing heat and light.
producing speed, momentum, and direct forces.
making magnetic fields, open circuits, and conductors.
running diesel engines, producing solar power, and generating atomic power.
Which device converts electrical energy to mechanical energy?
fan
oven
radio
toaster
Why is it important to make sure the electrical cord is plugged in before a device will work?
A. Electricity leaves the device and goes into the wall.
B. Electric cords can be a safety hazard and cause tripping.
C. Electricity coming through the wire is being changed to other forms of energy.
D. Electric cords keep the device from moving.
A television uses electrical energy to make —
heat.
light.
motion.
reactions.
When a loop of wires is rotated through a magnetic field, what do we get that is useful?
battery power
compass direction
electric current
light energy
Which symbol correctly labels the top of the battery?
=
x
+
*
Which component of a circuit pushes the electric current around the circuit?
battery
bulb
switch
wire
Which component of a circuit changes electrical energy into light energy?
battery
bulb
switch
wire
Which component of a circuit conducts the flow of electricity or the current?
battery
bulb
switch
wire
Which component of a circuit allows current flow if it is closed and stops the current if it is open?
battery
bulb
switch
wire
In a circuit diagram, what does this symbol represent?
switch
battery
bulb
wire
Which letter in the diagram designates the power source?
A. A
B. B
C. C
D. D
Which letter in the diagram designates the point where the circuit closes or opens?
A. A
B. B
C. C
D. D
What happens in a parallel circuit if one bulb goes out?
The other bulbs will continue to burn.
All of the bulbs will go out.
The bulbs closest to the burnt bulb will go out, but the others will continue to burn.
The other bulbs will become extremely brighter.
Which figure below shows a circuit that is connected in series and is complete?
A. [Diagram A]
B. [Diagram B]
C. [Diagram C]
D. [Diagram D]
Which answer describes a parallel circuit?
It has two or more pathways for the electric current.
It has only one pathway for the electric current.
It has no pathways for the electric current.
It has an open pathway for the electric current.
Which of these materials is the best electrical conductor?
copper wire
string
sticks
dry soil
Which of these are not conductors?
aluminum and copper
plastic and wood
lemon juice and tap water
the human body and a salt solution
Each answer below includes a conductor and a non-conductor. Find the pair that is different from the others.
metal spoon, plastic straw
aluminum foil, rubber eraser
chalk, glass
copper penny, wood pencil
What purpose does the rubbery coating on electrical wires serve?
It is an insulating material that shields the conductor inside.
It is a colorful material that adds stability to the wire.
It is important for conducting the electricity to the appliance.
It is important for conserving electricity.
Why would you replace a frayed electrical cord?
The appliance may not work.
A short circuit could occur.
It would be dangerous if someone came into contact with the bare conductor.
All of these are good reasons.
Which material would a magnet pick up?
steel
rubber
copper
plastic
A wire wrapped around a magnet is an example of a/an —
electromagnet.
closed circuit.
open circuit.
parallel circuit.
Electromagnetism can be described as —
the flow of electrical currents.
space around an object in which electric forces occur.
a temporary magnet produced from the arrangement of wire wrapped around a core.
the property of matter that compares the amount of matter to the space it takes within a confined area.
Opposite poles of two magnets _______, while like poles _______.
repel, attract
attract, repel
attract, show no change
show no change, repel
Disk drives, video players, and loud speakers all use —
compasses.
bar magnets.
electromagnets.
electrical currents.
Which item can you pick up with a magnet?
a rubber tire patch
a paper clip
a wooden pencil
work gloves
When magnets move toward each other or towards certain types of metals, the effect is called —
attraction.
polarity.
repulsion.
assessment.
When magnets push away from each other and are hard to put together, the effect is called —
polarity.
attraction.
repulsion.
assessment.
Magnets have areas at their ends or on their tops and bottoms where the magnetic pull is the strongest. These areas are called —
the attractive regions.
the flux parts.
the repulsive area.
the poles.
