What does light energy do to different objects?. Check the next day to see if the light energy changed the object.. Light is a kind of energy.. Is light energy good or bad?. Energy • Is
Trang 1FOCUS Book
Beyond the Book
Visit a science museum to learn
more about what light can do
Is Light Good or Bad?
What does light energy do to
different objects? Test it and see!
Collect pairs of objects You could
try two sheets of colored paper, two
orange peels, or two cups of water
Place one of the objects in bright
sunshine Put a box over the other
object to keep out the Sun’s light
Check the next day to see if the light
energy changed the object What
happened after two days? Try other
materials Draw or write your results
Trang 2Is Light Good or Bad?
© Learning A–Z
Written by Cynthia Kennedy Henzel
All rights reserved.
Photo Credits:
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Alamy; page 9: © SerrNovik/iStock/Thinkstock
The Sun is a big, bright star It sends light to Earth Light is a kind of energy
Is light good or bad?
Is light energy good
or bad?
FOCUS Question
Is Light Good or Bad?
Cause and Effect
Reading Levels
Learning A–Z I Lexile 300L
Correlations
Fountas and Pinnell* I
Trang 3Energy • Is Light Good or Bad? 3 4
Light energy keeps Earth warm
Too much light energy makes Earth
hot It can make you feel hot, too!
Light helps plants grow Too much light hurts plants
The Sun can burn
your skin Ouch!
Always use
sunscreen!
Trang 4Light lets us see the world
Too much light hurts our eyes
Light from the Sun shines through windows It makes homes bright When the Sun is not shining, homes get dark
Trang 5Energy • Is Light Good or Bad? 7 8
Sometimes people use lightbulbs
to make light
Light helps us see at night
Too much light keeps us awake
Light helps us go into dark places
Too much light keeps us from seeing stars
Trang 6Light energy can help us Light energy
can hurt us
What do you think? Is light energy
good or bad?
Write or draw your answers on separate paper Use details from the book to support each answer.
1 The Sun sends light to Earth, and light is a kind
of .
A star
B energy
C brightness
2 Look back at the pictures in the book Name two things you could do to protect yourself from the Sun’s light
3 Look at the pictures on page 8 Which child probably thinks light is good? Why?
4 Think about what you learned about light energy Why is the air cooler at night than
in the day?
Is light energy good or bad? Name two ways that light energy helps us
and two ways that it hurts us Use examples from what you read.
FOCUS Question