# Science Experiment: Density – Marbling Paper

Science Experiment: Density – Marbling Paper

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Density  is how close together the molecules of a substance are or how much mass a substance has in a given space. If you have one cup of jelly beans and one cup of marshmallows…the jelly beans have more mass…there is more “stuff” compacted into the cup. The marshmallows are mostly air. If you put each of those cups in a microwave to melt…the sugar and water that makes up the jelly beans would almost fill the cup to the top. The sugar and water that makes up the marshmallows would only fill the cup a little bit because marshmallows have less mass, they are mostly made of air. Materials with more density weigh more. A cup of jelly beans weighs more than a cup of marshmallows.

If you pour two substances of different density in a pan, the material with more density is heavier and will sink to the bottom. Watch this happen be using oil, water and food coloring to make marbled paper.

What You Need:

•  Shallow Pan (like a brownie pan)
• Water
• Food Coloring
• Cooking Oil
• White Paper
• Fork
• Cups

You need one cup for each color of food coloring you have. Put a tablespoon of cooking oil in each cup. Add a couple drops of food coloring to each cup – one color in each cup. Stir each oil/food coloring mixture really good with a fork.

Now fill the shallow pan about half way with water. Take each cup and pour a little of the oil/food coloring mixture into the water. Put each color in a different section of the pan. Swirl the colors with a fork. When you like the pattern, lay a clean white sheet of paper on top of the water. Leave it for 30 seconds and then carefully lift it off and lay it down to dry. Pretty!

Water has more density than oil. Materials with more density weigh more. Any substance that has less density than water will float. The food coloring doesn’t mix with the water, it just floats with the oil and makes swirl patterns.

# Books:

Words to Know:

Density – How closely packed together the molecules of a substance are.
Mass – How much matter fits in a given space.
Matter – Stuff
Weight – A measure of the force of gravity on an object. Materials with more density weigh more.
Volume – How much space a substance takes up.
*****The confusing relationship between weight and mass: On earth, a bowling ball can weigh about 10 pounds. If you take that same bowling ball to the moon it will weigh much less because the graviational pull of the moon is less than the gravitational pull on the earth. Weight is a measure of gravitational pull. So the weight of the bowling ball, or anything else, changes depending on where you weigh it. The mass of the bowling bowl does not change no matter where it is. The bowling ball has the same amount of mass  on earth as it does on the moon or anywhere else you take it.

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# Homework Help: The Great Depression

Homework Help: The Great Depression

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The Great Depression is a time in United States history during which a large number of people were unemployed. A lot of businesses failed because people did not have money to buy anything. The Great Depression started when stock market prices began to fall on September 4, 1929 and crashed on October 29, 1929, also known as Black Tuesday. The Great Depression lasted through the middle of the 1930s.

Dorothea Lange was a photojournalist. A photojournalist is someone who takes photos to tell a story. Dorothea is well known for her photographs of people during The Great Depression, many of them poor and unemployed. Her pictures made the experience of the Depression personal by giving it a face. In Dorothea Lange the Photographer Who Found the Faces of the Depression you can learn about how she told the stories of the people who lived at a very challenging time with her photos.

The websites and books on this page will help you learn even more about what life was like during The Great Depression. It was a very hard time but many, many people who lived through it remember it fondly as a time when families and friends helped each other and relied on each other for even basic needs like food and shelter. To give you a start looking at what life was like back than, here are some colonial items that are Artifacts at The Children’s Museum of Indianapolis.

Spartan Blue Bird Radio – “Radio was the most important source of news and entertainment in a 1930s home, but few Americans could afford a rare blue-mirror radio during the Great Depression. In 1936, designer Walter Dorwin Teague created this streamlined Moderne or Deco styleradio with the idea that an object’s appearance is as important as its technology.”

## Websites, Activities & Printables:

U.S. History in Context: Great Depression is a database you can use in any IndyPL Library Branch or at home with your IndyPL Library Card. Login using your library card number and PIN. What’s My PIN? It will show you biographies, magazines, videos and more about the Great Depression.​

NoveList K-8: Stories about the Great Despression is a database you can use in any IndyPL Library Branch or at home with your IndyPL Library Card. Login using your library card number and PIN. What’s My PIN? Novelist will show you fiction chapter books and picture books you can read set in the time of the Great Depression. Click on “Check the Library Catalog” to see if IndyPL has the book.

## eBooks:

Use your indyPL Library Card number and PIN to check out FREE Online eBooks. Click on a book jacket & enter your Library Card number and PIN to borrow. What’s My PIN?

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# Homework Help: Skeletal System

Homework Help: Skeletal System

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The Skeletal System is made up of the 206 bones that hold the body up. It is amazing that the body can direct muscles to move all those parts around. It is one thing to raise an arm up and down…but then think about what a soccer player does or a ballet dancer or someone climbing a cell tower to repair damage from a storm. Really, the human body is so amazing. The books and websites listed below will help you learn a lot more about the skeletal system.

Websites, Activities, Printables & Databases:

DK Find Out! Skeleton and Bones
Biology4Kids: Skeletons Inside and Out
BBC: Human Anatomy Skeleton
National Health Museum: The Living Skeleton
Wonderopolis: Why Do Our Joints Pop?
Wonderopolis: How Does An X-Ray Work?
Printable: Human Skeleton Diagram
Printable: Color and Label Human Skeleton
Online Game: Learn the Skeletal System

Science in Context: Skeletal System is a database you can use in any IndyPL Library Branch or at home with your IndyPL Library Card. Login using your library card number and PIN. What’s My PIN? It will show you biographies, magazines, videos and more about the Skeletal System.​

MORE Websites, Printables & Activities on the indyPL Kids Pinterest Board: Skeletal System

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# Homework Help: Nervous System

Homework Help: Nervous System

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The Nervous System coordinates the voluntary and involuntary movements of the body. It includes the brain, the spinal chord and the nerves.

Websites, Activities, Printables & Databases:

KidsHealth: the Brain & the Nervous System
KidsHealth Interactive Diagram: Brain & Nervous System
National Geographic Kids: Your Amazing Brain
Wonderopolis: What Makes Your Brain Wake Up?
Printable: Central Nervous System
Printable: The Brain Game (Label the Lobes)
Printable: Neuroscience Coloring Book

Science in Context: Nervous System is a database you can use in any IndyPL Library Branch or at home with your IndyPL Library Card. Login using your library card number and PIN. What’s My PIN? It will show you biographies, magazines, videos and more about the Nervous System.​

More Websites, Printables & Activities on the IndyPL Kids Pinterest Board: Nervous System

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# Countries of the World

Countries of the World

If you need to do a report about one of the countries of the world or just want to learn about what life is like somewhere else, the websites and books on this page will help you get started. You will be able to find maps, flags, national anthems, food, clothing, games and more. To find library books, use the online catalog for kids.

To find a book about a particular country just type the name of the country in the search box and click “search.”

There are also country books about themes like  “games” or “festivals” that will have information about individual countries. In books like these, individual countries will have a chapter or a section. Or, you might have to look up a country’s name in the index at the back of the book, to find out which page to go to.

## Databases:

CultureGrams Kids Edition Choose a country to find up-to-date information for reports including:

• language
• climate
• geography
• economy
• history
• population
• government
• holidays
• religion
• recipes

You need to know your indyPL Library Card number and PIN to login to CultureGrams Kids EditionWhat’s my PIN?

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