Graded Answers
artificial satellite
any human-made object placed in orbit around a body in space
electromagnetic spectrum
all of the wavelengths or frequencies of electromagnetic radiation
frequency
the number of waves per second
radiation
the transfer of energy as electromagnetic waves
satellite
a body that orbits a larger body in space spinoff
telescope
A device built to observe distant objects by making them appear closer
rocket
A device that expels gas in one direction to move the rocket in the opposite direction.
space probe
A spacecraft that carries scientific instruments that can collect data, but has no human crew.
space shuttle
a spacecraft that can carry a crew into space, return to Earth, and then be reused for the same
purpose
radio waves
the largest wavelength of all electromagnetic energy
Lunar Reconnaissance Orbiter
The probe sent to the moon in 2009 to scout out the best location for a moon outpost
First moonwalk
1969
Last time humans went to the moon
1972