Earth Cycles

Earth Cycles

Ms. Garcia

There is no lightbulb out in space. The only reason we can see in space is because of the suns burning energy being reflected on the objects in space.

Day and Night

• The Earth is a sphere, or ball, which spins round and round as it travels around the sun

• One side of the Earth faces the sun, while the other side side faces away into space.

• The side facing the sun is bathed in light and heat -- we call this daytime.

• The side facing away is cooler and darker, and experiences night.

• Because the Earth is constantly spinning, the line between day and night is always moving around the planet.

• A day on Earth lasts 24 hours -- that is how long it takes for the planet to spin around once.

Multiple Choice

Is it daytime or night in position marked X?

• Daytime

• Night

Multiple Choice

Is it daytime or night at position marked X?

• daytime

• night

Multiple Choice

Which diagram models a hyptothetical situation in which every location on Earth would have 12 hours of daylight and 12 hours of darkness per day?

• A

• B

• C

• D

Open Ended

What would happen to us here on earth of a day lasted 30 hours rather than just 24 hours?

Open Ended

How long would you say a day (or sunlight) lasted at the North or South Pole?

Multiple Choice

Which of these changes would likely occur if the rate of Earth's Rotation on its axis increased?

• length of seasons would be shorter

• length of seasons would be longer

• length of day would be shorter

• length of day would be longer