Satellites orbiting the Earth are used for navigation, meteorology, astronomy and communication. The curved reflectors of satellite dishes allow signals to be sent and received over large distances.
What is a satellite?
A dish on the side of a house
Any object orbitting a planet
A method for communicating over large distances
Which of the following is an example of a natural satellite?
Which of the following is an example of an artificial satellite?
Saturn's moon, Titan
What is the period of a satellite?
The time it takes to orbit a planet
The time it takes to orbit a star
The time it takes to fall to the ground
How does a satellite's period change with its altitude above the planet?
As the altitude increases, the period stays the same
As the altitude increases, the period decreases
As the altitude increases, the period increases
What is a geostationary satellite?
A satellite that stays at the same point above the Earth as it orbits.
A satellite that moves over different parts of the Earth's surface as it orbits.
A natural satellite like the moon
How long does a geostationary satellite take to orbit the Earth?
What kind of transmitter do ground stations use to transmit to satellites?
Curved dish transmitters
Flat disk transmitters
What is the purpose of a curved reflector on a satellite?
To reduce the signal strength
To increase the signal strength
To increase the signal frequency
What is the minimum number of geostationary satellites that will allow for worldwide communication?
Which of the following is an example of global imaging?
Mapping worldwide weather