Seasons, Moons and Tides - 12/13 - 1/17

Warm-up

12/13 - What is the main reason for the seasons? (SS pgs. 146-149)

12/14 - Use the following simulations to complete the worksheet Reason for the Seasons:

1. Earth and Sun - esminfo.prenhall.com - Shows solstices and equinoxes through a year.

2. Seasons and Ecliptic Simulator - astro.unl.edu - Change the latitude to see sunbeam angle and spread during the year.

3. Sun's Rays Simulator - astro.unl.edu - Shows how the sun's most direct rays hit different parts of the earth as the seasons change.

4. Seasons Interactive - highered.mcgraw-hill.com - Change the tilt to see the effect on the seasons (Q. 7 of Reason for the Seasons Worksheet).

1/3 - Use the picture to answer the questions:

1. What season is the Northern Hemisphere beginning?

2. What season is the Southern Hemisphere beginning?

3. If this is a solstice, what is the date? (month and day)

4. What line on earth is getting the most direct sunlight?

1/4 - How does the angle at which the sun hits the Earth's surface effect the temperature? (SS pg. 144)

1/5 - Why do some scientists think there is a ninth planet in the solar system?

Scientists Find Evidence for Ninth Planet in Solar System - nationalgeographic.com

1/6 - Make a Venn diagram comparing a solar eclipse to a lunar eclipse. (SS pgs. 158-159)

1/10 - Make a Venn diagram comparing High Tide with Low Tide. (SS pgs. 168-170)

1/12 To Run the Tides Gizmo:

1. Open the Chrome Browser

2. Go to this link at explorelearning.com

   1. Use the Login: cb744 Password: lake744

3. Select the Tides simulation from the list.

4. Use the Tides simulation to complete the worksheet packet.

Objectives

• Relate Earth's days, years, and seasons to Earth's movement in space.

• Explain the causes of ocean tides.

• Describe variations in the tides.

• Match tidal variation with lunar phases.