A) between the Tropic of Cancer and the Arctic Circle.
B) between the Tropic of Capricorn and the Antarctic Circle.
C) above the Arctic Circle.
D) below the Antarctic Circle.
E) in northern Newfoundland.
Correct Answer
verified
True/False
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) nuclear fusion in Earth's core.
B) nuclear fission in Earth's core.
C) dynamo-like motions in Earth's interior.
D) gravitational accretion.
E) advection.
Correct Answer
verified
Multiple Choice
A) 0
B) 1
C) 2
D) 4
E) 6
Correct Answer
verified
Multiple Choice
A) A
B) B
C) C
D) D
Correct Answer
verified
Multiple Choice
A) It must be the June solstice.
B) It must be the December solstice.
C) It must be one of the equinoxes.
D) It must not be the June solstice.
E) It must not be the December solstice.
Correct Answer
verified
Multiple Choice
A) planets form as a direct result of the nuclear fusion of nebular gases and planetesimals.
B) planets form from the remains of super-giant planetesimals that undergo nuclear fission and blow apart,thereby creating smaller objects-the planets.
C) early in the solar system's history,a star passed near to the Sun and pulled off gases that eventually condensed to form planets.
D) matter in a nebula experiences mutual gravitational attraction,and this results in the gradual accretion of larger and larger bodies-planetesimals.
E) electrical space storms charged particles that were attracted together to form planets.
Correct Answer
verified
True/False
Correct Answer
verified
Not Answered
Correct Answer
verified
Multiple Choice
A) 80 500 kilometres per hour.
B) 300 000 kilometres per hour.
C) 300 000 kilometres per second.
D) 1 000 000 000 kilometres per second.
E) 400 000 kilometres per year.
Correct Answer
verified
Multiple Choice
A) abnormally wet years
B) droughts
C) both A and B
D) none of the above
Correct Answer
verified
Multiple Choice
A) yes the orientation of Earth's surface relative to the Sun's rays diminishes the intensity of solar radiation at high latitudes.
B) no the Sun's rays must pass through more atmosphere at higher latitudes.
C) yes the poles point toward the sun for a significant time each year.
D) no each latitude receives the same amount of energy at the surface
Correct Answer
verified
Multiple Choice
A) variability in the Sun's output.
B) the changing distance of Earth from the Sun.
C) variation in the value of a watt.
D) Earth's sphericity,which presents varied angles to parallel solar rays.
E) the longterm decrease in the Sun's energy output.
Correct Answer
verified
True/False
Correct Answer
verified
True/False
Correct Answer
verified
True/False
Correct Answer
verified
Multiple Choice
A) December 21 = vernal equinox.
B) September 22 = summer solstice in Australia.
C) March 21 = equal day and nights everywhere on Earth.
D) June 21 = equal day and nights everywhere on Earth.
E) December 21 = subsolar point at the Tropic of Cancer.
Correct Answer
verified
Multiple Choice
A) the Earth-Sun distance averages 150 million kilometers.
B) it takes light an average of 8 hours and 20 seconds to travel from the Sun to Earth.
C) Earth is closer to the Sun in July (perihelion) and farther away in January (aphelion) .
D) it varies by up to 50% throughout its orbit
E) it remains constant through time.
Correct Answer
verified
Multiple Choice
A) a star and the planets that orbit it make up a solar system.
B) it takes light about 10 000 years to cross our galaxy.
C) a galaxy consists of hundreds of solar systems.
D) when we look at the stars in the night sky,we are looking forward in time.
E) time and distance are not related in the universe.
Correct Answer
verified
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