Physics - P1

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Distance is equal to
Speed x Time
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Parallax
Nearer stars move slightly on the background of distant stars, measured using the parallax angle
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Order of Planets
Mercury, venus, earth, mars, jupiter, saturn, uranus, neptune
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The speed of light
300,000 km/s
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Distance of stars
Brightness, parallax
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Brightness of stars
the dimmer the stars the further away they are
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Moons
Balls of rock with a near circular orbit around different planets
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Asteroids
irregular lumps of rock mostly between mars and jupiter on a near-circular orbit
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Comets
Balls of rock or ice with an elongated orbit around the sun
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Dwarf planets
Small round lumps of rock that orbit the sun, for example pluto
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A light year is ...
... the distance light travels in a year
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Our galaxy
milky way
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The universe expanding is called the ...
... Big Bang
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How are stars formed?
Dust and gas is pulled together by gravity until nuclear fusion happens
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Nuclear Fussion
Forcing helium nuclei together, this creates other elements which spread through space when the star dies and explodes
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We can see that the universe is expanding due to ...
... Red Shift
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Red Shift
When stars are moving away they move closer to the red in the spectre therefore causing red shift
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Red shift continued
Red shift is the increase of wavelength of light waves.
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Other cards in this set

Card 2

Front

Parallax

Back

Nearer stars move slightly on the background of distant stars, measured using the parallax angle

Card 3

Front

Order of Planets

Back

Preview of the front of card 3

Card 4

Front

The speed of light

Back

Preview of the front of card 4

Card 5

Front

Distance of stars

Back

Preview of the front of card 5
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