astronomy test one Flashcards

1
Q

what is heliocentric

A

when the sun is the centre

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2
Q

what is geocentric

A

when the earth is the centre

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3
Q

what are three difference between inner and outer plants

A
  1. rocky, gaseous
  2. small, large
  3. hot, cold (in comparison)
    when further they rotate slower
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4
Q

what is a solar eclipse

A

when the moon is between the sun and earth therefore casting a shadow on the earth.

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5
Q

what is a lunar eclipse

A

the earth is between the sun and moon creating a shadow on the moon so it appears a reddish colour.

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6
Q

what direction does the sun rotate and revole

A

counterclockwise

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7
Q

what is the name given to groups of stars that form patterns

A

constellation

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8
Q

what is another name for the North Star

A

polaris

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9
Q

can people in Australia use the North Star as a reference point

A

no - they are below the equator and see a difference set of stars

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10
Q

list three difference between stars and plants

A

hot, cold
large, small
create light, reflect light
no atmosphere, atmosphere

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11
Q

list plants in order largest to smallest

A

Jupiter, Saturn, uranus, neptune, earth, venus, mars , mercury

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12
Q

why does the earth have different season

A

the tilt and revolution

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13
Q

what are the different phase of the moon

A

new moon
waxing crescent
1st quater
waxing gibbous
full moon
waning crescent
3rd quatre
waning gibbous

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14
Q

what does waxing mean

A

getting bigger

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15
Q

what does waning mean

A

getting smaller

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16
Q

what phase of the moon follows waxing gibbous

A

full moon

17
Q

the solar system family is defined as

A

the family of the sun, planets and their moon

18
Q

which of these words indicate the moon is closest to the earth

A

perigee

19
Q

how is a moon different then a planet

A

planet revoles around the sun and moons remove around a planet

20
Q

where is the sun at noon in decemember in Toronto

A

low in the south

21
Q

where is the sun at noon on march 21 on the equator

A

straight up

22
Q

where is the sun at noon on June 21 in Toronto

A

high in the south

23
Q

where is the sun at noon on June 21 on the equator

A

straight up

24
Q

where is the sun at noon on June 21 in southern Argentina

A

high in the north

25
Q

what constellation is the Polaris star in

A

ursa minor

26
Q

what I the longest day of the year

A

June 21 - summer solstice

27
Q

what is the shortest day of the year

A

December 21 - winter solstice

28
Q

equal day/night

A

march 21 and septembre 21 fall and spring equinox

29
Q

what is the tilt of the axis

A

23.5

30
Q

what are the two different types of planets

A

gas giants and terrestrial