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Science > PHYSICS-space > Flashcards

PHYSICS-space Flashcards

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Biology 101 flashcards
1
Q

What is a axis

A

a imaginary vertical line that goes form one pole of the earth to the other, the earth spin on the axis

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2
Q

what makes a day

A

24 hours, the time it takes for the earth to spin once on it axis

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3
Q

what is earth

A

the planet we live on

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4
Q

what is a leap year

A

a year with 366 days in it, we have a leap year every 4 years

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5
Q

what is a lunar month

A

28 days- the time it takes the moon to orbit around earth once

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6
Q

what is the moon

A

the moon is a large piece of rock orbiting around the planet

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7
Q

what does orbit mean

A

the path that a planet takes around the sun, or that a moon or satellite take around a planet

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8
Q

what is a satellite

A

any object/thing that orbits a planet

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9
Q

what is a sphere

A

a shape like a ball

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10
Q

what is the sun

A

the biggest star in the universe it also orbits the earth

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11
Q

what is a year

A

the length it takes a planet to go around the sun. (365.25 days)

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12
Q

what is a full moon

A

when the moon looks like a bright full circle of light

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13
Q

what is luminous

A

when something gives of light

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14
Q

what is a lunar eclipse

A

when the moon moves into the shadow of the earth

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15
Q

what is a new moon

A

when we cannot see the lit-up side of the moon

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16
Q

what is a partial eclipse

A

a solar eclipse when the moon is between earth and the sun and casts a shadow on part of the earth

17
Q

what is a total eclipse

A

when the moon completely blocks out light from the sun

18
Q

what is the equator

A

an imaginary line through the middle of the earth

19
Q

what is hemispheres

A

the two half’s of a sphere

20
Q

what is the northern hemisphere

A

the half of the earth with the north pole in it

21
Q

what is an asteroid

A

a small lump of rock orbiting around the sun

22
Q

what is the solar system

A

a star with planets and other objects orbiting it

23
Q

what is a constellation

A

a patten of stars

24
Q

what is a galaxy

A

millions of stars grouped together

25
Q

what is a light year

A

the distance that light travels in a year

26
Q

what is the milky way

A

the galaxy that our solar system is in

27
Q

what is a star

A

a huge ball of gas that gives of light and heat energy

28
Q

what is a universe

A

all the galaxies and the space between them make up a universe

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