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GRACE for Beginners 2


Test your GRACE knowledge. All the answers for this quiz can be found on the GRACE web site. Good Luck!
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1: The distribution of mass over the Earth is non-uniform. GRACE will determine this uneven mass distribution by measuring changes in what?
Earth's rotation
Earth's gravity field
Earth's water supply
Earth's magnetic field
2: What is the GRACE launch vehicle?
Pegasus
Delta II
Rockot
Ariane V
Space Shuttle
3: Which of following causes the Earth's gravity field to continually change?
The rotation of the Earth
Variations in the Earth's mass
Variations in the Earth's water content
The rotation of the moon
4: The gravitational data collect by GRACE will be combined with data from other NASA satellites, aircraft, and ground based measurements to study the movement of liquid water on Earth. The movement of water on earth is called the hydrolic cycle. Which of the following is not part of the Earth's hydrolic cycle?
Percipitation
Hibernation
Evaporation
Filtration
5: How do the GRACE satellites measure the distance between them?
a microwave beam
a lasar beam
a mylar tether
a eletromagnetic charge
GPS
6: The branch of science dealing with obtaining precise meaurements of the Earth, mapping points on the Earth's surface, and studying the Earth's gravitation field is known as?
GRACE
Earth Science
Geodesy
Geology

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