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Invisible Force Challenge

3 minutes 13 seconds

Now Playing As: Captioned (English) (change)

To change a spacecraft's speed and direction, NASA engineers use a planet's or moon's gravity, a process called a "gravity assist." In this video, students design and build systems that use magnets to control the speed and direction of a rolling ball. As they build their systems, they use the engineering design process, apply a variety of science concepts, and learn how NASA spacecraft use gravity to help them explore the solar system. Part of the "Design Squad Nation" series.

Media Details

Runtime: 3 minutes 13 seconds

Topic: Science
Subtopic: Electricity and Magnetism, Physics, Space Sciences
Grade/Interest Level: 3 - 8
Standards:

Release Year: 2013
Producer/Distributor: PBS Learning Media
Series: Design Squad Nation

Video Web Page Series Website Student Handouts Teacher's Guide

Illustration image of a satellite. Caption: Juno is an unmanned deep-space mission

Slit screen of a person in a virtual reality suit and the computer representation of her body. Caption: It actually recognizes my skeleton based on these different markers.

Space rocket launching as seen from below. Caption: I want to contribute to the first manned mission to Mars.

Robot with logos for NASA and GM. Caption: that we developed to assist astronauts in space

Astronaut in a space suit working on a machine. Caption: Training takes place in the neutral buoyancy lab.

Person placing a magnet to one side of the path directly in front of a ramp. A dotted line projects the path of an object that will move from the ramp and curve toward the magnet. Caption: Let's place the magnet somewhere to alter the marble's course.

Person holding a magnet above a pile of metal shavings. Some of the metal shavings are adhering to the magnet. Caption: that exert a force on metal objects when they're nearby.

Cardboard pieces cut and attached together to resemble robotic arms attempting to pick up rocks. Caption: Let's see if these robotic arms can pick up some space rocks.

Four people in a yard holding balloons. One is on a ladder. Caption: Five, four, three, two, one.

Person holding a paper cup with rubber bands and binder clips wrapped around a tubular object. Caption: (Nate) There's lots of ways of getting the straw into the potato.