7.1 Technology for Space Exploration

A satellite is any object in space that orbits another object. A(n) ________ satellite is any human-made object placed in orbit around a body in space.

• global
• artificial
• information
• satellite

Some examples of artificial satellites include remote-sensing, navigation, weather and ______ satellites.

• rockets
• communications
• gravity rockets
• Challenger

Scientists use remote-sensing satellites to study Earth. They collect information without physically being there. Some data they collect includes resources, pollution, global temperature, ocean and land heights, and the amount of fresh water, ice, and ______.

• gravity
• satellites
• sea ice
• artificial

Weather satellites constantly monitor the atmosphere for events that lead to _________ weather conditions.

• severe
• imagine
• information
• decisions

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Data from satellites can be combined to form one image that shows more complete information. The combined image is called a _______ image.

• different
• combined
• color
• composite

Satellites that relay data, including Internet services, television, radio, and long-distance telephone calls are _________ satellites.

• location
• communication
• navigating
• signals

The GPS satellites continuously send _______ signals.

• light
• sound
• microwave
• noise

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A process used to deal with the problem of atmospheric disturbance where astronomers fire laser beams into the upper atmosphere to gauge the amount of disturbance in the column of air is called _______.

• ground based radar
• adaptive optics
• telescope blob
• atmosphere limitations

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In 1990, the NASA Hubble Space telescope provided remarkable images of a small patch of sky near the constellation Ursa Major. Over a period of _____ days the telescope took _____ images to create the view on page 380-381.

• 10 & 342
• 8 & 242
• 20 & 142

Visible light is only a small portion of the electromagnetic spectrum. Because of special telescopes, we know that objects in the universe emit ________ radiation.

• electromagnetic
• gas
• wave
• spectrum

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