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The Solar System and The Solar System and BeyondBeyond
21/04/23There are nine planets in our solar There are nine planets in our solar system:system:
Mercury
MarsJupiter
Saturn
Neptune
Uranus
Pluto
VenusEarth
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The Earth orbits the sun every…The Earth orbits the sun every…
……year (365 year (365 11//44 days)days)
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The Earth is kept in orbit by the force of…The Earth is kept in orbit by the force of…
GravityGravity
…and by the fact that is is moving at a high velocity
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Gravity also keeps the moon in orbit Gravity also keeps the moon in orbit around the Earth. The moon orbits the around the Earth. The moon orbits the
Earth every…Earth every………month (28 month (28 days)days)
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Gravity is ________ if the planet has Gravity is ________ if the planet has more mass:more mass:
Earth
Jupiter
21/04/23How much of the moon we see How much of the moon we see depends on where the moon is in its depends on where the moon is in its
orbit:orbit:
Appearance:
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Appearance:
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Appearance:
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The moon is a “natural satellite”. A satellite The moon is a “natural satellite”. A satellite is anything the orbits the earthis anything the orbits the earth
Artificial satellites have four main uses:
– Communications
– Monitoring the weather
– Observing the Earth
– Exploring the solar system
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The Earth is tilted on an axisThe Earth is tilted on an axis
North pole
South pole
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The Earth spins on its axis every ___ (__ hours)
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Because of this spin the sun rises in the Because of this spin the sun rises in the ______ and sets in the ____________ and sets in the ______
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The sun appears lower in the _______ than it The sun appears lower in the _______ than it does in the ______:does in the ______:
Winter
Summer
Longer shadows in winter
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While the Earth is spinning the side that faces the sun is in ________
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The Earth is divided up into the northern The Earth is divided up into the northern hemisphere and the southern hemisphere:hemisphere and the southern hemisphere:
Equator
Northern hemisphere
Southern hemisphere
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The tilt of the Earth on its axis is also The tilt of the Earth on its axis is also responsible for the seasons:responsible for the seasons:
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Two things Two things happen because happen because
of this tilt:of this tilt:
1)The days are longer during the summer
2)The weather is warmer during the summer
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EclipsesEclipses
1. A solar eclipse:
2. A lunar eclipse:
21/04/23Solar systems, galaxies and the Solar systems, galaxies and the UniverseUniverse
OUR SUN is one of millions of stars that orbit the centre of…
THE MILKY WAY, which is one of a billion galaxies that orbit AND move away from the centre of…
THE UNIVERSE
(Basically, everything in the universe orbits around something else)