3 3 12 fun with science (science)

by Abe BeakerPHOTOGRAPHY CREDITS: Cover: Harcourt School Publishers; Title Page: Harcourt School Publishers; 2 b Harcourt; 5 b Harcourt School Publishers; 6 br Harcourt School Publisher

Fun with

SCIENCE

by Abe Beaker

by Abe Beaker

PHOTOGRAPHY CREDITS: Cover: Harcourt School Publishers; Title Page: Harcourt School Publishers; 2 (b) Harcourt;

5 (b) Harcourt School Publishers; 6 (br) Harcourt School Publishers; 8 (br) Harcourt School Publishers; 10 (b) Harcourt School Publishers

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ISBN-10: 0-547-25293-5

ISBN-13: 978-0-547-25293-3

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Fun with SCIENCE

A science fair is a good place to learn about science Students set up their

projects at the fair Judges give an award certii cate or a trophy to students who have the best projects

A winning project is educational and gives a lot of information

Science fairs are fun You might see a presentation about a plant or animal

Many science fairs take place every

year But you don’t have to wait for the next fair

You can have fun with science all year!

You may have seen a model volcano

at a science fair It looks impressive

when something sprays out the top of the volcano

You can make your own volcano at home or in class You can even make the kind that will erupt!

This volcano was made by students your age

It is not the kind that erupts.

First, get a clean plastic bottle Put it

on a large baking pan Then use clay to make a volcano shape around the bottle Don’t build above the top of the

bottle Be creative and add colors to your volcano Be careful not to get clay inside the bottle

These boys are learning about volcanos.

Next, mix together one-half cup

of vinegar, three drops of soap, and a teaspoon of red food coloring Pour the red mixture into the plastic bottle

Quickly add three tablespoons of

baking soda to the bottle

Your volcano will erupt when you mix the baking soda and vinegar

Together they make a gas As the gas rises to the top of the bottle, it pushes the red mixture over the sides This looks like the volcano is erupting

You can do experiments to learn about the world around you Experiment with static electricity

Here is one experiment Rub a

balloon on your hair Then lift up the

balloon

A balloon can teach you a lot about science.

You will see that your hair sticks to the balloon Rubbing the balloon against your hair caused electrical charges to

build up on your hair and on the balloon

If two things have the same kind of charge, they push away from each other

If they have different charges, they pull toward each other

The balloon and your hair have

different charges, so they pull toward each other

You can use

different materials

to experiment with

balloons.

Here is another balloon experiment

Rub a balloon on a piece of fuzzy cloth

Rub only in one direction Rub ten times Then hold the balloon up to a wall The balloon will stick to the wall

Keep track of your experiments in charts like

this one.

Object Sticks For How

Long?

Does Not Stick

wall ✔ 2 minutes

desk

Static Electricity, Balloon Experiment

Then rub the balloon on the cloth

again Rub ten times Now hold the

balloon up to your desk Keep track of whether it sticks or not Write down how long it sticks

Tell your friends about your

experiments Report your results to

them Together you can have fun with science

TARGET VOCABULARY Word Builder

What words do you know that mean the

same as creative? Copy this word web and

add more words.

Text to Self You have just read about some

fun science projects Write a paragraph

about a creative science project that you

would like to do Include at least two words from the Word Builder in your description.

Write About It

creative artistic

charts

creative

educational

erupt impressive presentation report

TARGET VOCABULARY

TARGET STRATEGY Visalize As you read, use selection details to picture what is happening.

Which vocabulary word can you make

if you rearrange the letters in starch?

HOUGHTON MIFFLIN

Online Leveled Books

Level: L

DRA: 24

Science

Strategy:

Visualize

Word Count: 433

3.3.12 Build Vocabulary