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astronomy pretest?
a-degree angle formed when viewing distant objects from diff. points of view
b-top of the celestial sphere directly above a viewer
c-degree angle around the horizon from a point of reference
d-degree angle above the horizon
e-"wandering" of a plantet against the celestial sphere
1. What definition best fits azumith
2.What definition best fits declination
a.meters
b.kilometers
c.astronomical units
d.solar days
e.light years
3.Which unit of measure can best be used to estimate the distance to the planets
4.stars?
5.between galaxies?
6.Which tool can be used to show that the earth rotates on its axis? a-clock, b-meter stick, c-pendulum, d-telescope, e-laser
7. which math subjects were most helpful to ancient scientists in estimating size of sun&distances to celestial objects?a-algebra,b-geometry,c... theory
8.Whats a lunar eclipse?Solar eclipse?
9.whats a "new moon"? "last quarter moon"? "waning crescent moon"?"first quarter moon?
thx for answering.
1. d
2. c
In the other options listed:
a - parallax
b - zenith
e - prograde (moving in the same direction as other objects in the system) and retrograde (moving in the opposite direction
3. C
4. E
5. E
6. Pendulum
7. Geometry
8. Lunar eclipse: when the earth casts a shadow on the moon
Solar eclipse: when the moon gets directly between the earth and the sun and casts a shadow on the earth
9. New moon - the moon is between the sun and the earth and the side facing earth is in shadow
Last quarter - when the moon makes a right triangle with the earth and sun and we see only half of the sunlit side (the moon is past full)
Waning crescent - when the moon has moved just enough past new moon to show a tiny lit crescent
First quarter when the moon makes a right triangle with the earth and sun between new moon and full moon
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