What determines
the length of
a day on Earth?
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The rotation of
the Earth on its axis.
The Earth rotates
once every
24 hours.
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Was Earth’s day
always 24 hours?
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NO!
When the Earth and
Moon system first formed,
the Moon was much closer
and the days were shorter.
Perhaps as short as 4 hours!
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Are the number
of hours of daylight
always the same
throughout the year?
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NO!
Daylight hours vary
throughout the year.
The day with
the most hours of
daylight occurs at
the beginning of summer.
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Which planet
has the shortest day?
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Jupiter!
It is the fastest spinning
planet in our Solar System.
It makes one complete rotation
every 10 hours.
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What type of tree
is found in
the taiga biome?
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Coniferous trees including
spruce, pine, larch and fir
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Where is the taiga biome located?
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How many
pine cones
grow on
a pine tree?
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All of them!
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How do animals
in the taiga biome
adapt to the
HARSH
winter conditions?
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Thick fur coats
hibernation
migration
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How does permafrost affect the taiga?
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This permanently frozen layer of soil
limits root growth and
blocks water drainage.
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What is the soil in the taiga like?
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The thin layer of topsoil
is of poor nutrient quality.
Fallen conifer needles make it acidic.
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Why did the spruce tree fail arithmetic?
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Because
it couldn’t do
square roots.
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Describe the climate of the taiga.
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Long, cold winters.
Short, cool summers.
Moderate precipitation through the year.
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