GUESS
Earth in Space
Earth's Structures
Energy in Earth
Earth's History
100
What is the speed of a cheetah running 90 km in 30 minutes?
3 km/min
100
The theory of how the universe began
Big bang
100
Oil, Natural gas, & coal are types of
Fossil fuels
100
External source of heat of Earth
Sun
100
Calculating the age of rocks that contain radioactive isotopes
Radioactive dating
200
The same cheetah traveling at 3 km/min starts to decelerate to a stop in 3 min. What is the acceleration of the cheetah?
-1 km/min2
200
2 atoms that combine in the sun's core
Hydrogen into Helium
200
Theory of the movement of Earth's plates
Plate tectonics
200
Electromagnetic waves transfer the heat from the sun to Earth by
Radiation
200
Determining the age of rocks by studying fossils
Fossil correlation
300
The cheetah has a mass of 3000 kg and accelerates at 5 km/min2. What force is applied?
15,000 N
300
3 possible stages of life for a star as it dies
White dwarf, Neutron star, & Black hole
300
3 types of geochemical cycles
Water, Carbon, & Nitrogen
300
A benefit of this type of energy resource can be replaced in a short time and cause no pollution
Renewable
300
States that younger rocks lie above older rocks
Law of superposition
400
The cheetah has a mass of 3000 kg and is on a 3 m rock. What is the cheetah's potential energy? (gravity = 9.8 m/s2)
88,200 J
400
Changes that occur in a star as it ages
Stellar evolution
400
List 4 of the 5 processes of the water cycle
Evaporation, Transpiration, Condensation, Precipitation, & Return of flowing water to the ocean
400
Spin of the Earth on its axis
Rotation
400
List the 4 eras of Earth (in order from first to last)
Precambrian, Paleozoic, Mesozoic, & Cenozoic
500
What is the momentum of the 3000 kg cheetah if it is traveling at 7 km/s?
21,000 kg x km/s
500
90% of life of a star is in this stage
Main sequence
500
List 2 (1 from each person) things learned from the video "An Inconvenient Truth"
Answers vary
500
Internal source of heat... be specific (not core)
Radioactive decay
500
A fossil contains 16 mg of radioactive carbon-14. How much carbon-14 will remain after two half-lives?
4 mg
M
e
n
u