AS Flashcards

(48 cards)

1
Q

an area in the sky containing a group of stars in a pattern is called

A

constellation

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2
Q

a notable grouping of stars that do not contain a constellation

A

asterism

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3
Q

how long does it take our sun to revolve around the celestial sphere

A

365.25 days

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4
Q

when 3/4 of the moon’s lit surface faces the earth, and the lit part is shrinking, we say it’s a ___ moon

A

waning gibbous

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5
Q

who said “a great central fire controlled all motion in the universe”

A

pythagoras

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6
Q

claudius ptolemy proposed what idea that explained planetary retrograde motion

A

epicycles

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7
Q

Johannes Kepler created 3 laws concerning interplanetary motion. which one of the laws below is NOT one of Kepler’s

a. each planet’s path around the sun is an ellipse, with the sun at one focus of the ellipse
b. a planet speeds up when it is closer to the sun, and slows down when it is farther away
c. if you know how long a planet takes to orbit the sun, you can tell its average distance from the sun, vice versa
d. E=mc^2

A

d. E=mc^2

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8
Q

sir isaac newton created 3 universal laws of motion. which one of the laws below is NOT one of newton’s?

a. a body in motion tends to stay in motion, and a body at rest tends to stay at rest
b. the acceleration of an object is proportional to the force exerted on it
c. for every action there is an equal and opposite reaction
d. mass can neither be created nor destroyed

A

d. Mass can neither be created nor destroyed

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9
Q

shape of earth is most accurately described as

A

oblate spheroid

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10
Q

earth’s interior is made up mostly of

A

olivine

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11
Q

the earth consists of 3 layers, which of the following is NOT one of the layers

a. crust
b. magma
c. mantle
d. core

A

b. Magma

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12
Q

what percent of the atmosphere is nitrogen

A

78%

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13
Q

what percent of the atmosphere is oxygen

A

21%

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14
Q

what percent of the atmosphere are trace gases and mostly argon

A

1%

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15
Q

what layer of the atmosphere do we live, work, and play in

A

troposphere

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16
Q

the 2 times in a year where we have our longest and shortest days

A

summer and winter solstice

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17
Q

charged particles from the sun are captured by earth’s magnetic field, also known as what?

A

van allen belt

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18
Q

name for lighted moving “curtains” in our polar regions

A

aurora borealis

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19
Q

which “tide” occurs during full moons and new moons

A

spring tide

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20
Q

during a total lunar eclipse, what color is the moon?

21
Q

what caused the “maria” on the moon

22
Q

what is the most widely accepted theory for the formation of our moon

A

large impact theory

23
Q

primary source of the sun’s energy comes from

A

a series of nuclear fusion reactions

24
Q

birthplace of stars

25
stars are made up of mostly what two gases
hydrogen and helium
26
out of earth, mars, mercury, and uranus, which one is not a terrestrial planet
uranus
27
jupiter and neptune are examples of what type of planet
jovian
28
celestial bodies that orbit planets are called what
satellites and moons
29
distance between the sun and earth
93,000,000 miles
30
what is a light year
the distance it takes light to travel in one year
31
6 trillion miles equals what
one light year
32
the current most accepted theory for solar system's origin is
the solar nebula theory
33
mercury shows no signs of a(n)
atmosphere
34
mercury's temp ranges from ___ degrees in the daytime to ___ degrees at night
800 and -280
35
venus and earth have similar what
diameters
36
mercury and venus are only visible..
just before sunrise and/or just after sunset
37
the planet with the daytime summer temperatures most similar to earth's is what
mars
38
the largest and fastest rotating planet is
jupiter
39
jupiter's _____ is 20,000 times greater than Earth's
magnetic field
40
saturn's density is such that it
would float if you could place it in a very large ocean
41
saturn's moon TITAN is the only moon in our solar system known to have a(n)
atmosphere
42
international astronomical union created 3 categories for celestial bodies orbiting the sun. which of the following is not one of those categories? a. trans-kuiper objects b. planets c. dwarf planets d. small solar system bodies
a. trans-kuiper objects
43
largest known object in the asteroid belt
ceres
44
between which two planets is the asteroid belt located at
mars and jupiter
45
what is the name of the theoretical sphere where billions of comet nuclei exist
oort cloud
46
what is this object found on the surface of a planet
a meteorite
47
a black hole is
a super dense object in space where escape velocity exceeds the speed of light
48
mnemonic for order of planets
my very excellent mother just served us some nachos