Written by Evan Forbes, Janet Hale, and Cindy Christianson

Transcription

1 Written by Evan Forbes, Janet Hale, and Cindy Christianson

2 Teacher Created Resources, Inc Industry Way Westminster, CA ISBN: Teacher Created Resources, Inc. Reprinted, 2010 Made in the U.S.A. Editors: Wanda Kelly JoAnn Merrell Cover Artist Tony Carrillo Illustrator Wendy Chang Kelly McMahon The publisher and authors of this book have taken every reasonable precaution to ensure the users of this book that all activities and experiments are safe when directions are followed and done properly. However, the publisher and authors assume no liability from the conducting of these activities and experiments and further more advise parents, guardians, and/or teachers to supervise young children when attempting any of these activities or experiments. The materials in this book may be reproduced for personal or classroom use only. The reproduction of any part of this publication for an entire school or school system is strictly prohibited. No part of this publication may be transmitted, stored, or recorded in any form without permission from the publisher. #3196 Simple Science Fun 2 Teacher Created Resources, Inc.

3 Table of Contents About This Book Science Safety Rules Physical Science Activities Amazing Balloon An Underwater Fountain Baffling Blast of Air Balancing a Potato Balloon Blowout Bridge Construction Candle Caper Clever Cup Crafty Colors Cup-O-Strength Dancing Raisins Daring Dime Dry Cleaning Eggs-tra Strength Homemade Glue How to Make Invisible Ink I m Crushed In Hot Water It s in the News Leap Frog? No...Leap Ball Let It Rip Let s Go for a Spin Liquid Layers Moving Grains of Pepper Musical Bottles Nifty Knives One Tough Tissue Paper Porthole Plunger Strength Powerful Paperbacks Rocket Compression Sink or Swim Spark in the Dark Star Search Sticky Penny That s a Gong That s Egg-cellent Watery Wonders Wet or Dry What a Strong Grip Wonder Boat Teacher Created Resources, Inc. 3 #3196 Simple Science Fun

4 Table of Contents Life Science Activities Animals Around the House Ant Farming Checking Your Pulse Count the Insects Fishy Business Home for Winter Ice Cream Life in a Bottle Life Underground Life s Little Building Blocks Magic Plants Moldy Bread P-U Plants Eat Too Plant Parts Run to the Sun Underwater Locomotion Earth Science Activities Clean Water Cooking the Natural Way Expanding Water Homemade Volcano Salty Water Smooth Rocks Soil Examination Soil: Plant, Mineral, or Both Stalactites/Stalagmites Tasty Treats The Air We Breathe Glossary Slow Down Sprouting Sponge The Same but Different Tree Rubbings #3196 Simple Science Fun Teacher Created Resources, Inc.

5 Amazing Balloon Question Why can you run a skewer through an inflated balloon without it popping? #3196 Simple Science Fun Teacher Created Resources, Inc.

6 Amazing Balloon Materials several 8 10" (20 25 cm) round-shaped balloons one thin, wooden shish-kebab skewer petroleum jelly What to Do 1. Blow up one balloon (not too full). It works best when the balloon is blown to half-size. Then tie the end of the balloon in a knot. Stick a wooden skewer into the balloon. What happens? 2. Blow up a second balloon just like in step one. This time you are going to attempt to put the skewer through the entire balloon without popping it. 3. Coat the tip of your skewer with petroleum jelly and then push the sharp end of the skewer into the balloon right next to where the knot is tied. 4. Continue to push the skewer gently through the inside cavity of the balloon and then exit the balloon at the top of the balloon where the rubber is least stretched. (This area looks like a small, dark dot or circle.) 5. When the point of the skewer begins to exit the balloon, continue pushing so the skewer is even on both sides. 6. Why did the balloon not pop? Why It Works Balloons are made of rubberized material. This rubberized material is called a polymer. Poly- meaning many and mer- meaning molecules. The balloon s material is made up of many molecules linked together. These links are strong and try hard to stay linked (they do not like being broken or pulled apart). When the skewer is pushed through the balloon where it is least stretched (unlike the first popping experience) the links give just enough, allowing the skewer to pass through the balloon. This also creates a hole in the balloon, allowing air to slowly leak out. This slow leak becomes obvious if the skewered balloon is observed about one-half hour later. Teacher Created Resources, Inc. 9 #3196 Simple Science Fun

7 An Underwater Fountain Question What causes colored water to rise from a small bottle? #3196 Simple Science Fun 10 Teacher Created Resources, Inc.

8 An Underwater Fountain Materials small glass bottle hot water food coloring of your choice string large jar of cold water What to Do 1. Tie the string around the neck of the small bottle. 2. Then fill the bottle with hot water and add food coloring. 3. Slowly lower the bottle into the large jar of cold water. A cloud like a colored fountain will rise out of the small bottle. Why It Works Water expands when it is heated. Hot water is less dense than the cold water. Therefore, the hot water floats to the top just as wood or a cork would float. They are less dense, as well. Teacher Created Resources, Inc. 11 #3196 Simple Science Fun