This power point and most of our Unit 1 and 2 materials were created by Mr. Gord and adapted for our class.

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Presentation transcript:

This power point and most of our Unit 1 and 2 materials were created by Mr. Gord and adapted for our class.

Grab a handout packet & calculator you may need to share calculators, we are using Mrs. Starr’s calculators so please treat them with respect. You may use your own calculator. Today’s Topic: Earth’s Motion Goals Define Rotation Calculate Earth’s Rate of Rotation at various Latitudes Identify direction of Earth’s Rotation Compare Earth’s Rotational Period to other Planets.

Rotation defined… Spinning of one object around its own axis.

Effects of Rotation Rising and Setting of celestial objects Night, day Coriolis Effect (swirling, curving, deflecting winds around a low pressure system – like a hurricane) Oblate Spheroid

Northern Hemisphere Southern Hemisphere

Rotation proof… Foucault Pendulum Proves Earth’s Rotation

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Lines of Latitude when viewed from Above N.P.

Lines of Latitude when viewed from Above S.P.

Calculate the rate of Earth’s rotation at various latitudes

At the equator At 0o latitude, on the equator, if each degree of longitude is separated by approx. 70 miles I need to see work/calculations that justify the answers.

On a clean sheet of paper Calculate the rate of Earth’s rotation at various latitudes… I need to see work/calculations that justify the answers.

At 0, 20, 40, 70, 90o 0 = circ is 25, 000 miles 20 = 23, 400 mi 40 = 19,080 mi 70 = 8,640 mi 90 = ? What part of the Earth is rotating the fastest? Write a sentence that shows the relationship between latitude and rotational speed?

Assignment Using Page 577. Calculate the rotational speed of each of the planets at their equator? Answer in mi/hour. I need to see the work/calculations! A. Which planet rotates the fastest? B. Which Planet rotates the slowest? C. Is there a pattern? Describe. D. What do you think the SHAPE of Jupiter is? Why?