Seasons

What does earth's constant rotation cause us to experience? it experiences the motion and gives us day and night. How long does it take earth to complete one rotation? it takes 24 hours. From which direction does the sun rise? on the b side witch is left. From which direction does the sun set? part c on the south side. What do you think would happen if the Earth stopped rotating? How would this effect humans life here. lives will be distroyed without sunlight and people wil be dieing

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? it is tiled What two hemispheres does the equator divide the earth into? Nother || 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 || **Upload Word document to your wiki.** ||
 * Instruction || Task (place on your wiki) ||
 * [] || What poles does the Earth's axis run through? nother and south
 * Show what you know using the directions below!!!

Did you know that the Earth's axis does not change position as it revolves around the sun?!? What star is it always pointed at? Go to the internet to find the answer. Hint: It is the brightest star in the constellation Ursa Minor.
 * So...why is this important to how seasons change. Let's shed a little light on the subject!**

You are going to conduct an activity. Take a flashlight from the counter. Turn it on. Hold your hand flat, straight up and down about an inch away from the light source (direct light). Think about what you feel. Now, tilt your hand back, so it is at an angle (indirect light). Think about what you feel. **Copy the chart and key concept below onto your wiki and fill it out.**


 * Direct Light || Angled or Indirect light ||
 * hot || warm ||

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

The Earth Revolves Around the Sun

Describe the way the sun's rays are || Northern Hemisphere
 * 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.


 * winter || spring || summer || fall ||
 * cold || warm || hot || cool ||

Southern Hemisphere


 * winter || spring || summer || fall ||
 * hot || cool || cold || warm ||

[] || **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 || shortest || longer || longest || shorter ||
 * || winter solstice || spring equinox || summer solstice || fall equinox ||
 * Date || december 22 || march 21 || june 21 || september 22 ||
 * Describe the


 * Putting It All Togther...**

explaining the reason for the seasons. STEP #1: Click on the link below: [] In the first bubble you will place your topic: Phase Changes. Create five bubbles around the topic bubble. Place one phase change in each bubble with its definition. Add examples around each of the phases. When you finish, click on the menu button on the bottom right hand corner of the screen. Select export. A box will appear along the right side of the screen. Make sure the buttons for "image" and "JPEG" are filled in, if not, click on them. Click on "OK". Click "save" and save to the desktop. Upload to your wiki activity page || Topic Bubble (center): One or two or three words describing what you are writing about. Subtopics (four bubbles around the center): Write one of the four seasons in each bubble. Details (go around each of the four seasons): Describe the tilt of the hemisphere and the type of sunlight striking the earth's surface. ||
 * Follow the steps below to use Bubblus to create a graphic organizer
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 * STEP #10:**
 * Upload final copy to your wiki page.**