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WorksheetsReview (Part 1)
Total questions: 20
Worksheet time: 10mins
Which of the following is the most important source of light on Earth?
Which of the following is a visible flash of light in the sky?
What is the source of light in the picture?
traffic lights
headlights
LED lights
streetlights
All the animals are bioluminescent organisms except for one. Which is it?
Why are candles and flashlights important at home?
They can be used for emergencies.
They can be used as decoration at home.
They can be used as signals on the road.
They can help us see the street at night.
Which of the following is a CFL light bulb?
Describe the sound produced by the cat.
loud sound
soft sound
Describe the sound produced by the fireworks.
loud sound
soft sound
Describe the sound produced by this musical instrument.
loud sound
soft sound
Why is the sound coming from the fire alarm important?
It can be used for communication.
It serves as a warning.
It is for entertainment.
It helps us gather information.
Analyze the picture. Why is sound important?
It can be used for communication.
It serves as a warning.
It is for entertainment.
It helps us gather information.
Light and sound are forms of (a) .
Which of the following sources of light is a lighthouse?
Moon is considered as nonluminous because it does not have light of its own.
TRUE
FALSE
Why do people use Christmas lights and LED lights at home?
They help us see the streets at night.
They make the place beautiful.
They are used in case of emergency.
They serve as signal on the road.
We cannot see if there is no ____.
sound
light
Which of these objects can be sources of light?
Which of the following activities shows the importance of sound?
_____ produces a soft sound.
A lion roar
A whisper from a friend
A volcanic eruption
An airplane landing
Which of these activities show the importance of light?
reading a book
sleeping at night
riding a bicycle
drawing an animal
