The sun and stars

Day and Night Cycle/Seasons

by Lauren Olivares

​The Earth revolves around the sun

​Revolve- to travel around.

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​The Earth travels around the Sun

Orbit- a curved path the Earth takes around the Sun.​

​1 trip around the Sun take 365.25 days or 1 year.

​Rotation

​Rotation- rotate means to spin.

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Axis- an invisible line around which an object rotates or spins.

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​The Earth rotates on its axis the has a 23.5 degree tilt .

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​1 trip around takes 1 day or 24 hours.

​Day and Night Cycle

What causes day and night?

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• ​It is day when our part of the Earth is facing the Sun.

  • ​You can tell when it is day because it is light outside and you can feel the heat form the sun.

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​Day and Night Cycle

What causes day and night?

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• ​It is night when out part of the Earth is facing away from the Sun.

  • ​You can tell when it is night because it is dark outside and the temperature from the heat goes down.

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Multiple Choice

An imaginary line around which the Earth spins

• axis

• rotation

• movement

• compass

Multiple Choice

Period during Earth's rotation when Earth faces away from the Sun and it is dark

• day

• night

• shadow

• stars

Multiple Choice

Spinning of Earth on its axis.

• Rotation

• Revolution

Multiple Choice

Movement of Earth around the sun.

• Rotation

• Revolution

Multiple Choice

Which location on Earth receives the most direct sunlight?

• The deserts

• The South Pole

• The Equator

• The Western Hemisphere

Multiple Choice

Every 24 hours the  Earth makes one complete spin on its axis is called (a) --

• Rotation

• Compass

• Sundail

• Movement

Multiple Choice

Period during rotation when Earth is facing the Sun and it is lighted

• rotation

• day

• night

• shadow

Multiple Choice

If the earth didn't rotate on its axis, what natural cycle would this affect?

• seasons

• tides

• day and night

• moon phases

​Movement of the Sun

​Why does the Sun appear to move across the sky?

​The Earth rotating on its axis causes the sun to appear to move across the sky from East to West.

​What Direction does the Sun move?

• ​The Sun rises in the East.

• ​The Sun sets in the West

• ​The Sun moves from East to West.

​Shadows

• ​Shadows are casued by the movement of the sun.

• ​The movement of the sun causes shadows to have different lengths:

  • ​When the Sun is high in the sky, shadows are short.

  • ​When the Sun in low in the sky, shadows are long.

Multiple Choice

We have day and night because Earth ____.

• Revolves

• Rotates

​Seasons

​Seasons are caused by the Earth's tilt on its Axis.

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​The tilt causes the sun's light to hit the Earth directly and indirectly.

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How does this cause the seasons?​

​The Hemispheres

​​The hemispheres are divided by the equator.

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The Earth is divided into two hemisphers (halves), North and South.

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Summer - ​If one hemisphere is tilted toward the sun, it is summer.

​Winter- If one hemipshere is tilted away from the sun, it is winter.

Multiple Choice

Which of the following best describes the tilt of the earth when it is summer in the southern hemisphere?

• The northern hemisphere is tilted toward the sun
• The northern hemisphere is tilted away from the sun
• The norther hemisphere is tilted neither toward or away from the sun
• Why are you talking about the northern hemisphere when you asked about the southern hemisphere?

Multiple Choice

If its ____ in the Northern hemisphere, then its fall in the Southern hemisphere.

• spring

• summer

• fall

• winter

Multiple Choice

What is the name of the imaginary line which goes around the earth?

• orbit

• axis

• equator

Multiple Choice

The ____ divides the Earth into the Northern and Southern Hemisphere.

• Equator

• Axis

What makes the seasons different?

• In the Summer, we have warmer weather and longer days.

• In the Summer, the sunlight hits us directly.

• In the Winter, we have colder weather and shorter days.

• In the Winter, the sunlight hits us at a slant.

Multiple Choice

This season has short days and cold weather.

• Summer

• Winter

Multiple Choice

This season has long days and hot weather.

• Summer

• Winter

Multiple Choice

This season has direct sunlight.

• Summer

• Winter

Multiple Choice

This season has slanted sunlight.

• Summer

• Winter

Multiple Choice

The Poles ______ get direct sunlight. It is cold near the Poles.

• Never

• Always

Multiple Choice

The Equator ______ gets direct sunlight. It is warm near the Equator.

• Never

• Always