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A 2D Flash based module that runs in a web browser, if module doesn’t run download the latest version of the flash player from Adobe

Software Agreement

Grade and Content Area: 8th Grade – Earth and Space Sciences


Players are forced to defend Earth from comets, asteroids, meteors, meteoroids, and meteorites with a cannon and specialized ammunition. Space tools (satellites, probes, spectrometers, astronomers, and telescopes) are used to analyze the threatening object in an attempt to weaken them. By destroying these objects the player will earn knowledge points when can be used to upgrade the space tools making them more effective in the players’ defense of Earth. Additional knowledge may be earned by correctly answering questions pertaining to the subject matter.

Lesson Plan

Description of the Science Content of the Module: :Impact teaches properties and characteristics of comets, asteroids, meteors, meteoroids, and meteorites. It also introduces tools used to observe space such as telescopes, spectrometers, satellites, and probes.

When it is most appropriate to use the Module: During the teaching of meteors, meteoroids, meteorites, comets, and asteroids. Also can be used as an introduction to space tools.

Game Play: Players will operate a cannon used to defend Earth from comets, asteroids, meteors, meteoroids, and meteorites. Unique types of ammunition are provided to shoot down the different objects striking Earth. If all seven continents on the Earth are damaged from Impact the game is over. In order to learn more about and weaken the objects striking Earth the player can use space tools. These space tools include a telescope to increase the line of sight of the cannon, a spectrometer to analyze and weaken the objects, scientists to recover health, communication satellites that act as bombs to destroy all objects on the screen, and probes to gather information on all objects in the sky. For each object the is successfully destroyed the player earns knowledge points. These knowledge points can later be used in the astronomy lab to upgrade the space tools, making them more powerful. Additional knowledge points can be earned by correctly answering bonus questions presented at the conclusion of each level.

Controls: A mouse and keyboard are required for this game

  • Left-Click Used to select and press buttons. Used to fire the cannon and launch probes and satellites.
  • Keyboard The arrow keys are used to select weapons


Pre-test and Post Test Questions(doc)
Pre-test and Post Test Questions(pdf)

Education Standards: Grade 8 – Earth and Space Sciences

  • Benchmark A – Indicator 3 – Compare the orbits and composition of comets and asteroids with that of Earth
  • Benchmark A – Indicator 4 – Describe the effect that asteroids or meteoroids have when moving through space and sometimes entering planetary atmospheres (e.g., meteor-"shooting star" and meteorite).

This material is based upon work supported by the National Science Foundation under Grant No. 0538588. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.