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WorksheetsGrade 4 Light Energy
Total questions: 45
Worksheet time: 23mins
How can we see the moon at night?
It is a light source
It reflects the Sun's light
It is close to the Earth
It is a yellow planet
Select the term that best describes the picture
Transparent
Translucent
Opaque
Prism
Which description most accurately describes how the person sees the apple?
Light travels from the lamp, reflects off the apple, and goes into the eye.
Light travels from the lamp to the eye.
Light travels from the eye, reflects off the apple, and goes into the lamp.
Light travels from the apple, reflects off the lamp, and goes into the eye.
Describe how the size of a shadow changes as an opaque object is moved further away from the light source of a ray of light.
The shadow gets bigger.
The shadow gets smaller.
The light is reflected.
There is no shadow to begin with.
Lets almost all light through so things can be easily seen.
Transparent
Translucent
Opaque
None of the above
Shadow is formed on the ___________ side of the source of light.
left
front
right
opposite
The colour of the shadow depends on the colour of ___________.
Waves
Heat
Light
Capactiy
The shadow gets ___________ when screen is moved away.
smaller
darker
larger
no shadow
What is needed to cast a shadow ?
Translucent or Opaque object
all of these
Screen
Source of light
Which happens when the Earth comes in between the Moon and the Sun?
Lunar Eclipse
Solar Eclipse
Earth Eclipse
Jupiter Eclipse
Which eclipse do you need to wear special glasses for?
Mars Eclipse
Mercury Eclipse
Lunar Eclipse
Solar Eclipse
Why can you not see a total solar eclipse from everywhere on the Earth?
No, You can see a total solar eclipse anywhere on the Earth
Because the Moon is smaller than the Sun and the Earth
Because the Moon is bigger than the Sun and the Earth
Because the Earth is tilted
What does the word "Eclipse" mean in Greek?
Upfall
Downfall
Slideways Slide
Complete Ruin
How many weeks does a solar eclipse take place before or after a lunar eclipse?
One
Two
Three
Four
Does the direction of shadow change during the day? Does the length of shadow also change from season to season?
What is a shadow? How is it formed? How does the colour of an opaque object affect the colour of the shadow?
What is umbra and penumbra?
What happens when light falls on a mirror?
Label the diagram
Label the diagram
How is rotation different from revolution?
Describe the phenomenon of lunar eclipse
List the features of shadow
Students observe how light interacts with different materials and record what they see in a data table. Which material would be entered into the empty box on the data table?
Cardboard
Glass
Metal
Cloth
Jonathan wants to build a doghouse for his new puppy. His puppy will be living in the backyard. He uses a flashlight to test the following materials: frosted plastic, wood, and glass. He wants to make sure the material he uses will keep his puppy shaded and cool during the day. Below are his observations from his flashlight test.
He should use glass because it allows all light to come in, therefore, there will be no blocked light, so it will remain cool in the doghouse.
He should use frosted plastic so there is some light that can come in to keep the doghouse cool, but not too cold.
He should use a combination of all three materials to allow different amounts of light in to keep the doghouse cool.
He should use wood because it blocks all light from coming in, and this will keep the doghouse cool.
Students want to explore how light interacts with different materials. Which of the following investigations would BEST allow students to see how light interacts with different types of materials to classify them.
Take three different types of flashlights to see the amount of light that shines through a piece of construction paper.
Take three different types of flashlights to see the brightness of light when turned on in a dark classroom.
Take three different types of materials such as: aluminum foil, plastic wrap, and white paper to see the amount of light that shines through it when placed under a flashlight.
Take three different types of materials such as: cardboard, wood, and a thick blanket to see the amount of light that shines through it when placed under a flashlight.
Students conducted an experiment to classify different types of materials as opaque, transparent, or translucent. Which of the following charts correctly classifies the materials?
Students used flashlights on different materials and recorded their results. Which material demonstrated a reflection of light?
Students can demonstrate reflection by doing which of the following?
Warming metal under a heat lamp.
Enlarging an image using a hand lens.
Measuring a shadow made by the Sun.
Observing their own image in still water.
A student is planning an investigation to answer this question: How will a mirror reflect light that strikes it at different angles? As she investigates this question, what should she change in each trial to answer this question?
The type of light
The type of mirror
The location of the mirror
The location of the light she shines at the mirror
Four students are planning investigations about how light is affected by different objects.
Student #1 is investigating how light interacts with paper.
Student #2 is investigating how light interacts with aluminum foil.
Student #3 is investigating how light interacts with eyeglasses.
Student #4 is investigating how light interacts with water.
How many of these investigations will cause light to be refracted?
One
Two
Three
Four
What does the pencil in this picture show about light?
Light is refracted when it hits a curved object.
Light is reflected when it hits a curved object.
Light is refracted when it passes from air into water.
Light is reflected when it passes from air into water.
