# Author Spotlight: Raina Telgemeier

Author Spotlight: Raina Telgemeier

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# Science Experiment: Newton’s Second Law of Motion

Science Experiment: Newton’s Second Law of Motion

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Today’s experiment will demonstrate Newton’s Second Law of Motion.

Newton’s Second Law of Motion: Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).

SIMPLY: Pushing or pulling an object produces acceleration, a change in the speed of motion. Believe it or not, an accelertion can be a slowdown OR a speedup. The heavier the object, the more force it takes to make that object speed up or slow down. It takes more of your strength to push a bowling ball one foot than it does to push a marshmallow one foot. In this video, an astronomer demonstrates Newton’s Second Law of Motion. Or read this eBook, a brief introduction to gravity and motion. Physics explains how a roller coaster moves.

## Comet Cratering Experiment

This experiment is a demonstration of Newton’s Second Law of Motion

What You Need:

• Pie Pan or Other Dish with Sides
• Flour
• Hot Chocolate Mix
• 3 Sizes of Marbles or Rocks
• Spoon

Put several spoonfuls of flour in the bottom of the pan and spread it out to make a level surface. Then sprinkle a thin layer of hot chocolate mix on top of the flour. Now hold one marble/rock above the surface of the flour and drop it. Do the same with the other two marbles/rocks. Now carefully lift each marble/rock out of the flour and look at the impact crater. Which marble/rock made the widest impact crater? Which one made the deepest impact crater?

Science Project Idea:

Do this experiment again. Use three different sizes of marbles. Marbles are great for this project because they are round, which makes measuring the size of the impact crater easier. Remember that in a science experiment you want to test only one variable. In this experiment we only want to change the size/weight of the object that is falling. If we changed the shape of the object too, it would be hard to measure the difference in the impact craters.

While doing the experiment, pay close attention to how far away the marbles are from the surface of the flour before you let go of them. Use a ruler to make sure you drop each marble from exactly one foot above the surface of the flour. Do the experiment three times using the same three objects. The three times you repeat the experiment are called trials. Make a chart to keep track of the results. After each trial measure the width of the impact crater made by each of the three marbles. Which marble makes the largest impact crater? Which marble makes the deepest impact crater? Why do you think so?

 Websites for Research: Science Projects On Newton’s Second Law of Motion TryScience Comet Cratering NASA: Newton’s Second Law of Motion Physics4Kids: Newton’s Laws of Motion Rice University: Newton’s Laws of Motion Home Science Tools: Newton’s Laws of Motion

## eBooks:

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

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# Homework Help – Ancient Cultures

Homework Help – Ancient Cultures

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In Ancient Worlds, discover the ancient ways of old civilization in Egypt, Greece, and Rome. Find out about the everyday life of the including what they ate, how they dressed, what they believed and what they thought was valuable. Listed below are several other books and website that will help you learn about the ancient world. You may be familiar with ancient Egypt because you have heard of King Tut or the pyramids. You may be familiar with Ancient Greece because you have heard the myths or heard about Ancient Rome and its Coliseum. What do you know, thought, about Ancient India or Ancient Africa? There were cultures living all over the world in ancient times.

At The Children’s Museum of Indianapolis you can see and sometimes touch ancient artifacts. Here are some Ancient Egyptian Artifacts from The Children’s Museum of Indianapolis:

Canopic Jar – “During embalming, the process used to create a mummy, specific internal organs were removed from the body in order to preserve them for the afterlife. Considered to be the most important organs, the lungs, liver, stomach and intestines were carefully stored in special containers called canopic jars.

Mummified Falcon – In Ancient Egypt, “many animals, including falcons and cats, were associated with powerful gods and considered sacred. Once mummfied, they were buried as offerings at temples and shrines dedicated to their associated deities. Falcons were believed to be an animal form taken by the sun god Horus, referred to as the Falcon God.”

Anubis Miniature Statue – “Anubis was the undertaker of the Ancient Egyptian mythological world….his job was to prepare the dead for their journey to eternal life, conduct their funerals, and accompany them to their tombs.”

## Websites, Activities & Printables

World History in Context: Ancient History 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? World History in Context will show you magazines, videos and more about ancient civilizations.

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: Middle Ages

Homework Help: Middle Ages

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The Middle Ages, or Medieval period, lasted from the 5th to the 15th century. This period is well known for the Bubonic Plague, feudalism (a social structure of knights, nobles & peasants), and castles.

Today, the Bubonic Plague kills about 120 people a year. In the 14th Century, during the Middle Ages, it swept through Europe, Asia and African and killed an estimated 50 million people. 50. Million. The population of Indianapolis is about 865,000. 50 million people is Indianapolis about 60 times. That is A LOT of people. Back then, people did not know about bacteria and how simple hand washing can keep disease from spreading.

In The Totally Gross History of Medieval Europe you can learn about what it would have been like to be alive during this time period. The books and resources below will give you a good look at even more details about life in a castle or on a farm during this time.

## Websites, Activities & Printables:

World History in Context: The Middle Ages 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? World History in Context will show you biographies, magazines, videos and more about the Middle Ages.​

NoveList K-8: Stories about the Middle Ages 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. Novelist will show you fiction chapter books and picture books you can read set in the time of the Middle Ages. 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?

## eAudio:

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

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# Homework Help: Excretory System

Homework Help: Excretory System

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The Excretory System removes waste that collects in the body during metabolism. Metabolism is when the bady takes in air, food and liquid. The body uses most of these things to grow and make energy, but the body can’t use all of it. The leftovers are called waste. These waste products can be toxic if they are not eliminated. Major organs of the excretory system include the kidneys, liver, bladder, lungs and large intestine. Yes, even the lungs – when you exhale, the lungs eliminate gases your body can’t use.

Websites, Activities, Printables & Databases:

DK Find Out: Your Water Works
Biology in Motion: Urine Concentration
Biology for Kids: Excretion is Not Elimination
Printable: the Urinary System
Video: Crash Course Excretory System From Your Heart to the Toilet

Science in Context: Excretory 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 Excretory System.​

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

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