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What if There Were No Seasons?

Last updated about 1 year ago
9 questions
What if There Were No Seasons?

What causes the seasons to change? Seasons
are caused by a 23.5 degree tilt of the Earth’s
axis during its revolution.
The tilt is a slant of the Earth’s axis, a 23.5
degrees from the axis.
The axis is the imaginary line that extends
from the North Pole to the South Pole and is
the center of the Earth’s rotation.
The Earth revolves around the sun. A
revolution is when one object moves around
another. It takes the Earth 365.25 days to
revolve around the sun.
The Earth also rotates or spins on its axis.
The rotation of the Earth causes day and night.
With the 23.5 ̊tilt, one hemisphere tilted more
towards the sun than the other. If you live in
North America, which is in the northern
hemisphere, during the summer the northern
hemisphere is tilted towards the sun and
receives more direct sunlight.

A hemisphere is half of a sphere and Earth is
divided into the northern and southern
hemisphere.
What would happen if the Earth didn’t tilt? We
wouldn’t have any seasons. It would be a
pretty different world that we live in. Our crops
wouldn’t grow correctly. If we didn’t have
crops, we couldn’t eat!
Our Earth would also get colder and colder the
further you get from the equator. We couldn’t
live in some of the locations we currently live
in. If we had to live closer to the equator, we
wouldn’t have as much space to live, and our
populations would be lower. They would have
to be!
And what would life be like closer to the
equator? It would be even hotter and more
humid than it is now. Studies have shown that
we might have more diseases because disease
thrives in warmer climates.
All life on earth would be completely different
without seasons.
1

The seasons are
caused by

1

What would be another
good title for this
passage?

1

Why would Earth be the
warmest near the equator
if there were no seasons?

1

What is the
imaginary line that
extends from the North
Pole to the South Pole
and is the center of the
Earth’s rotation?

1

What is half
of the Earth’s sphere
(e.g. northern/southern
or eastern/western)?

1

What is the
movement of one object
around another, for
example the Earth
around the Sun

1

the spin of the Earth on its axis

1

the slant
of the Earth’s axis, a
23.5 degrees from
vertical

1
Using the vocabulary words (bolded words) from the above passage, fill in the blanks.

As we stand on the Earth there are things happening that we don’t even know about it. Depending on where we live, our location is in one half of the sphere of Earth (for example, northern/southern), called a _______ . This sphere of Earth has an imaginary line going from the North Pole to the South Pole around which the Earth spins, or _______ , called the Earth’s _______ . This axis is at a _______ of 23.5º. At the same time that the Earth is spinning, it is also moving around the Sun. This movement of one object around another is called a _______ .
You will use an interactive tool to explore day and night.

Click the link to enter the interactive tool; you have 10 minutes.


https://www.scootle.edu.au/ec/viewing/L696/index.html
You will now create an interactive revolution and rotation sheet. Follow the directions carefully. Step 7 states you need to fill in notes; they are below. When you have completed your interactive, you need to get a signature from your teacher.






Revolution Notes
Rotation Notes

BE SURE TO CLICK SUBMIT WHEN YOU HAVE COMPLETED THIS ASSIGNMENT.