The Earth in Space Test consists of 21 questions. Correct answers will be provided after your answers have been submitted.

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1		The shape of Earth is that of a
			A)	perfectly round sphere.
			B)	pear-shaped form bulging at the poles.
			C)	irregular spheroid bulging at the equator.
			D)	flat table top.
2		Because of the shape of Earth's orbit around the Sun the overall Earth receives
			A)	6 percent more solar energy in January.
			B)	6 percent more solar energy in July.
			C)	the same amount of solar energy year around.
			D)	more solar energy in July and less in January.
3		As Earth moves in its orbit it has an orbital speed that is
			A)	slowest in January.
			B)	slowest at perihelion.
			C)	fastest in January.
			D)	fastest at aphelion.
4		The relationship of Earth's axis to the plane of the ecliptic
			A)	is one direction half the time, then moving to the opposite direction.
			B)	is the same direction at all times.
			C)	reverses direction every month.
			D)	reverses direction every 3 months.
5		The orientation of Earth's axis to the background of stars
			A)	is one direction half the time, then moving to the opposite direction.
			B)	reverses direction every 3 months.
			C)	is the same direction at all times.
			D)	reverses direction every month.
6		Days and nights vary in length throughout the year because of
			A)	daily rotation.
			B)	matching rotation and revolution.
			C)	a constant inclination and orientation of the axis.
			D)	yearly revolution.
7		The Northern Hemisphere's summer solstice occurs when Earth moves in its orbit to point the North Pole
			A)	directly away from the Sun.
			B)	directly toward the Sun.
			C)	halfway between toward and away from the Sun.
			D)	none of the above.
8		On the Northern Hemisphere's winter solstice the Sun at noon makes a shadow that is
			A)	shortest.
			B)	halfway between shortest and longest.
			C)	longest.
			D)	none of the above.
9		Daylight and night are of equal length during
			A)	spring or autumnal equinox.
			B)	winter solstice.
			C)	summer solstice.
			D)	None of the above.
10		Which of the following provides evidence that Earth rotates?
			A)	Coriolis effect.
			B)	solstices.
			C)	constant orientation of the axis.
			D)	all of the above.
11		The slow wobble of the earth's axis is called
			A)	the Coriolis effect.
			B)	precession.
			C)	Foucault effect.
			D)	none of the above.
12		The distance east or west from the prime meridian is called
			A)	latitude.
			B)	parallels.
			C)	longitude.
			D)	none of the above.
13		An apparent solar day is
			A)	the interval between two consecutive solar noons.
			B)	slightly longer than a sidereal day.
			C)	rarely exactly 24 hours long.
			D)	all the above.
14		If your favorite constellation rose at 8:00 PM one night, when would it rise two weeks later?
			A)	around 7:00 PM
			B)	at 8:00 PM
			C)	around 9:00 PM
			D)	it depends on the constellation
15		North of the Tropic of Cancer, the sun appears directly overhead at noon
			A)	daily.
			B)	never.
			C)	twice a year, at the equinoxes.
			D)	twice a year, at the solstices.
16		South of the Antarctic Circle, the sun appears
			A)	directly overhead only once a year
			B)	directly overhead twice yearly.
			C)	above the horizon all day at least once during December.
			D)	above the horizon all day at least once during June.
17		In the time 9:00 AM, the AM means
			A)	before the meridian
			B)	after the meridian
			C)	astronomical motion
			D)	after morning
18		We always see the same side of the Moon because
			A)	the Moon doesn't rotate.
			B)	the period of rotation of both Earth and the Moon is the same.
			C)	the Earth's rotation matches the Moon's revolution.
			D)	the Moon's periods of rotation and revolution are the same.
19		During which phase of the moon would we most likely see a solar eclipse?
			A)	full
			B)	first quarter
			C)	last quarter
			D)	new
20		A lunar eclipse can only occur during which phase of the moon?
			A)	1st quarter
			B)	full
			C)	last quarter
			D)	new
21		If you were flying east on a jet across three times zones and your watch read 12:00 noon when you landed, you should
			A)	set it to 9:00 AM.
			B)	leave it at 12:00 for that is when the sun crosses the celestial meridian.
			C)	set it 6:00 PM.
			D)	set it to 3:00 PM.