Seasons

How long does it take earth to complete one rotation?24 Hours From which direction does the sun rise?East From which direction does the sun set?West What do you think would happen if the Earth stopped rotating? Then only a certain side of the Earth would get sun and one would get darkness
 * What does earth's constant rotation cause us to experience?Day and Night

How would this effect human life?Only certain people would live in the light and the dark

Key Concept about Earth's rotation: ||



**The Reason for the Seasons**

Most every place on earth experiences four seasons a year. These are spring, summer, fall (autumn) and winter. During the following investigation we are going to explore the reason the different seasons occur.

As we consider the cause of the seasons we will need to understand the following:
 * The Earth's position on it's axis as it moves around the sun.
 * The way the sunlight strikes the earth's surface.
 * The Earth's movement around the sun.

The Earth Is Tilted! First, let's check out the Earth's position.

What do you notice about the Earth's position when the axis appears?Its tilted What two hemispheres does the equator divide the earth into?Northern Hemesphere || STEP #1 Create a diagram of the Earth's tilt using Microsoft Word. STEP #2 Open a new Word document STEP #3 Click "View" STEP #4 Click "Toolbars" STEP #5 Select "Drawing" STEP #6 Select the circle from the drawing tools (they will show up at the bottom of the page) STEP #7 Drag the "plus sign" across the page to make a circle about the size of a baseball. STEP#8 You are going to make the equator. STEP#9 Select the line from the drawing toolbar. STEP#10 Position the plus sign about halfway to the edge of the circle, click and drag the line to the other side. STEP #11 Make the equator line red. STEP# 12 You are going to make the axis line. STEP# 13 Select the line from the drawing toolbar. Position the "Plus sign" just above the circle at an angle to the right. STEP#14 Drag the line toward the bottom left of the circle. STEP #15 Make this line blue. STEP #16 Label the "N" for the North Pole, "S" for the South Pole, "NH" for the Northern Hemisphere and "SH" for the Southern Hemisphere STEP #17 Save and Upload file to your wiki "Seasons" page ||
 * Instruction || Task (place on your wiki) ||
 * [] || What poles does the Earth's axis run through?The north and the south
 * Show what you know using the directions below!!!


 * Direct Light || Angled or Indirect light ||
 * Bright, in one place,powerful || not as bright,bigger light, cover only certain area. ||

Key Concept: Which produces more heat? Which produces less?

The Earth Revolves Around the Sun

Describe the way the sun's rays are hitting the hemispheres during each of the season (direct, indirect, or equal). || **Copy, paste and fill out Southern and Northern Hemisphere charts on your wiki.** ||
 * Instruction || Task ||
 * Click on the link. Observe the Earth's tilt in the simulation. [] || Is the Earth's tilt always pointing the the right or the left?Right ||
 * Copy the Northern and Southern Hemisphere tables below. Paste them on your wiki.
 * [] || Do the Northern and Southern Hemispheres ever experience the same season? yes What do you notice about their seasons?First there different then same then different then same. ||

Northern Hemisphere


 * winter || spring || summer || fall ||
 * indirect || equal || direct || equal ||

Southern Hemisphere


 * winter || spring || summer || fall ||
 * direct || equal || indirect || equal ||

[] || **Copy the chart below and paste it on your wiki.** ||
 * Click on the link below for information to fill in the solstice/equinox chart.

amount of daylight || Longest || 12 hours || Shortest || 12 hours ||
 * || winter solstice || spring equinox || summer solstice || fall equinox ||
 * Date || December 22 || March 21 || June 21 || September 22 ||
 * Describe the