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# Energy In Motion

### Energy Study Guide- Lessons 1-10

Question | Answer |
---|---|

What is a battery? | A device that transforms chemical energy into electrical energy. |

How can you prove an object has energy? | An object has energy if it does work. |

Describe how energy is transformed from an object to an electric motor. | Chemical to Mechanical to Electrical. |

What is energy transformation? | Energy transformation is when energy is transferred into different forms. |

How do you calculate averages? | Add up your total data and dividing by the number of trials. |

What is mass? | The amount of matter in a body. |

What is weight? | The measure of the force of gravity on an object. |

How are mass and weight related? | The mass of a body determines how much it will accelerate whan unbalanced forces act on it. |

What is friction? | Friction is a force that opposes the motion of an object. |

How can you change friction? | You can change friction by changing surface type or weight. |

What is one variable you could change that would not affect friction? | Changing the surface area. |

What is work as it is described by a scientist? | Work defined by a scientist is the product of a force and the distance through which it acts. |

What are three examples of work? Explain how they meet the requirements for work. | Pulling a sled, lifting a box, pushing a block. Force is done on all three and they all move some dictance. |

What are the units of measure used for? Weight: Mass: Force: Distance: Work: Power: | Weight: Grams/Kilograms Mass: Grams/Kilograms Force: Newtons Distance: Meters Work: Newton-Meters/Joules Power: Watts |

Evan moved a statue with a constant force of 10N. He moved the statue 10 meters. How much work did he do each day? | 100 Newton-Meters. |

Sandra lifted a 25N bike 10m up some stairs. How much work did she do each day? | 250 Newton-Meters. |

Joe pushes at a steady pace with a force of 8.0N on a box. He moves thebox 3.0m in 5.0s. What is his power output? | 0.04 Watts. |

Created by:
katied111