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Meet the Author: Raina Telgemeier

Meet the Author: Raina Telgemeier

Books by Raina Telgemeier:

DramaKristy's Great IdeaSistersSmile


More about Women’s History:


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Newton’s Second Law of Motion

Newton’s Second Law of Motion

Find More Science Experiments

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:srpcometsetup2

  • 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:


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?
Junk Drawer ScienceScience Stunts Fun Feats of PhysicsWho Was Isaac Newton?Lives of the Scientists


Can You Feel the Force?Give It a Push Give It a PullIsaac Newton Discoverer of GravityGiants of Science Isaac NewtonIsaac the AlchemistLaws of Motion and Isaac NewtonPhysics Investigate the Mechanics of NatureProfessor Astrocat's Atomic Adventure a Journey Through PhysicsYou Wouldn't Want to be Sir Isaac NewtonIsaac Newton and Physics for Kids
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Websites & Activities:

Craft Projects for Minecraft and Pixel Art Fans Pixel Craft   Minecraft Tracer  Minecraft Crossword
Minecraft Bingo  Minecraft Steve Draw Minecraft Chicken  

Strategies & Hacks:

The Big Book of Building Blockopedia Minecraft Modding for Kids Unofficial Encyclopedia for Minecrafters
Minecrafter 2.0 Construction Handbook Combat Handbook Essential Handbook
Redstone Handbook Hacks for Minecrafters Combat Edition Hacks for Minecrafters Command Blocks Hacks for Minecrafters
Master Builder Hacks for Minecrafters Redstone Hacks for Minecrafters Holy Bible for Minecrafters Minecraft Surival
Minecraft Tips Redstone Devices Minecraft House Ideas

Chapter Books & Series:

See ALL Minecraft eBooks

The Battle of Zombie Hill Series: Defenders of the Overworld
#1: The Battle of Zombie Hill
#2: Battalion Banished
Diary of a Minecraft Zombie Series: Diary of a Minecraft Zombie
#1: A Scare of a Dare
#2: Bullies & Buddies
#3: When Nature Calls
#4: Zombie Swap
#5: School Daze
#6: Creepaway Camp
Rescue Island Series: Flynn’s Log
#1: Rescue Island
#2: Thorn’s Lair
#3: The Ultimate Form of Life
#4: Offline
Invasion of the Overworld Series: Gameknights999
#1: Invasion of the Overworld
#2: Battle for the Nether
#3: Confronting the Dragon
Herobrine Rises Series: Minecraft Adventures
#0: Herobrine Rises
#1: The Portal
#2: Day of the Creepers
#3: Here Be Dragons
#4: The Dark Temple
#5: Immortal Zombie
#6: Displaced Kingdom
#7: Forgotten Reboot
The Quest for the Diamond Sword Series: Minecraft Gamer’s Adventures
#1: The Quest for the Diamond Sword
#2: The Mystery of the Griefer’s Mark
#3: The Endermen Invasion
#4: Treasure Hunters in Trouble
#5: The Skeletons Strike Back
#6: Clash of the Creepers
Zombie Ambush Series: A Minecraft Novel
#1: Zombie Ambush
#2: The Rescue
#3: Final Play
#4: Battle at Creep Fields
#5: Isle of Adventure
#6: The Wildman
Trouble in Zombie-town Series: Mystery of Herobrine
#1: Trouble in Zombietown
#2: The Jungle Temple Oracle
#3: Last Stand on the Ocean Floor
The Secret Treasure Series: Unofficial League of Griefers Adventures
#1: The Secret Treasure
#2: Hidden in the Overworld
#3: Griever’s Revene
#4: Return of the Rainbow Griefers
#5: The Nether Attack
Saving Crafter Discoveries in the Overworld Quest for Justice Bacca and the Riddle of the Diamond Dragon
A Tale of Friends Enemies & Minecraft A Tale of Friends Enemies & Minecon The Legend The Temple of Distruction
The Doppelganger Trilogy The Dragons Mountain Trilogy The Obsidian Chronicles The Cult Trilogy
Minecraft Short Stories Escape from the Overworld Attack on the Overworld The Quest the Tale of Hero
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Ancient Cultures

Ancient Cultures


Ancient Egypt:

Ancient Greece:

Ancient Rome:


Outrageous Women of Ancient Times Mesopotamia Ancient Africa Ancient India
The Incan Empire Ancient America Ancient China Ancient Egypt
Pompeii Machu Picchu Ancient Communication Technology Everyday Life in the Ancient World
Learn to Draw Ancient Times The First Olympics of Ancient Greece
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Middle Ages

Middle Ages

The Middle Ages, or Medieval period, lasted from the 5th to the 15th century. This period is known for barbarian invasions, the Plague, Feudalism (a social structure of knights, nobles & peasants), Castles & the Crusades.


Non-Fiction Books:

You Wouldnt Want to be in a Medieval Dungeon Theres a Rat in my Soup The Miserable Life of Medieval Peasants Stonemason
Lady of the Manor Dont Let the Barber Pull Your Teeth Medieval Life Meieval Castle Adventures Art
Medieval Science Did Castles Have Bathrooms Good Masters Sweet Ladies You Wouldnt Want to be a Medieval Knight
Archers Alchemists etc The Crafts and Culture of a Medieval Town Arts and Crafts Knights and Castles Castles and Knights
Eyewitness Knight Life During Medieval Times Meet the Medievals The Black Death

Fiction Books:

Run Far Run Fast Beowulf a Heros Tale Retold Chaucers Canterbury Tales Whittington
Crispin The Door in the Wall The Executioners Daughter The Midwifes Apprentice
The Ramsay Scallop Brother Hugo and the Bear
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