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Time - PowerPoint PPT Presentation


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Time. How do we measure time?. Seconds Minutes Hours Days Months Years. Lets go to : Outer Space!. Revolution. Rotation. Why are there 24 Hours in a Day?. Because it takes 24hours for earth to complete one rotation. Rotation. What is a Month.

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Presentation Transcript
how do we measure time
How do we measure time?
  • Seconds
  • Minutes
  • Hours
  • Days
  • Months
  • Years
lets go to outer space
Lets go to : Outer Space!

Revolution

Rotation

why are there 24 hours in a day
Why are there 24 Hours in a Day?
  • Because it takes 24hours for earth to complete one rotation

Rotation

what is a month
What is a Month

The time it takes for the moon to Revolve around the Earth about once.

Revolution

what is a year
What is a Year?

It takes one Year for the earth to Revolve around the sun

the line between day and night
The line between day and night
  • It is always daytime somewhere on earth!

Day time

Nighttime

review
Review
  • What’s the Difference between Rotation and Revolution?

Rotation or Rotating

Revolution or Revolving

review1
Review
  • What is a month?
    • About how long it takes for the moon to________ around the earth.
  • What is a day?
    • How long it takes the earth to _______ once.
  • What is a year?
    • How long it takes the earth to ________ once around the sun

revolve

rotate

revolve

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