Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Normal Size Small Size show me how

# Forces & Motion

### 7th Grade Science Test Questions

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

The formula for Average Speed is | Average Speed = Distance/Time |

Arturo ran a 3,000-meter race. His running time from start to finish was 10 minutes. What was Arturo’s average speed? | 300 m/s |

Which is most likely needed when describing the change in position of an object? A. initial speed B. direction change C. reference point D. constant rate | C. reference point |

Explain why a car that is rolling on a level surface will eventually come to a stop? (not breaks) | Friction |

Two girls are pulling on opposite ends of a thick rope. Both girls pull on the rope with the same force but in opposite directions. This is an example of a __________________ force. | Balanced |

Two unequal forces act in opposite directions on a moving object. This is an example of a __________________ force. | Unbalanced |

Two students pull on a rope with 100 N in opposite directions. If the student on the left increased her force to 125 N, the rope would most likely | go from being motionless to left acceleration. |

When riding a roller coaster, an electric motor pulls the roller coaster to the top of the first hill. What force pulls the roller coaster down the hill? | gravity |

The force that prevents a ball rolling on the ground from continuing on its path forever is: | friction |

Which of the following changes when an unbalanced force acts on an object? | motion |

If an object has a mass of 50 kg and is accelerating at 2m/s/s, what is the force it will exert? | 100N |

The formula for Force is | Force = Mass x Acceleration |

John wants to build a racetrack that will allow his toy cars to travel fast when force is applied. Which material should he use? | Plastic |

A magnet is placed near a pile of steel paper clips. Which will most likely occur? | The magnet will provide an unbalanced force, pulling the paper clips toward it. |

Created by:
MrsCharity