Seasons

Reviewing Day and Night The Earth is a **sphere.** The Earth rotates, or spins, in place like a basketball on your finger. Click on the links below to answer the questions.


 * Instruction || Task (copy and paste onto your wiki) ||
 * []

[] || We would learn more about day and night. IT takes 24 hourse for the ritation of the earth. The sun rises from the east. The sun sets on the west. If the earth stoped rotation the side of the earth with darknes would get really cold and the people on that side might die. The humans could live by going on the sunny warm side.

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.

It looks tilted. North Hemistphere and south Hemistphere. || 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) ||
 * [] || The south and west poles.
 * 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.**

Hot || spread out heat weaker ||
 * Direct Light || Angled or Indirect light ||
 * fucused stop

Key Concept: Direct produces more. Angled or Indirect light was less.

The Earth Revolves Around the Sun

Describe the way the sun's rays are hitting the hemispheres during each of the season || **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. [] || The earth tilts more to the right becuase thats how it move around thr sun. ||
 * Copy the Northern and Southern Hemisphere tables below. Paste them on your wiki.
 * [] || Do the Northern and Southern Hemispheres ever experience the same season? What do you notice about their seasons? ||

Northern Hemisphere


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

Southern Hemisphere


 * winter || spring || summer || fall ||
 * indirect || equal || direct || 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 || 12 hours long || 12 hours long ||  ||   ||
 * || winter solstice || spring equinox || summer solstice || fall equinox ||
 * Date ||  ||   ||   ||   ||
 * 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
 * STEP #2:**
 * STEP #3:**
 * STEP #4:**
 * STEP #5:**
 * STEP #6:**
 * STEP #7:**
 * STEP #8:**
 * STEP #9:**
 * STEP #10:**
 * Upload final copy to your wiki page.**

[] Page1 Start off with general seasons information (How many there are, name each one,...) Page 2 Discuss earth's tilt and draw a picture Page 3 Winter Page 4 Spring Page 5 Summer Page 6 Fall Page 7 Restate the main reason for the seasons Page 8 Can you guess my favorite season? || **Print book, add illustrations, and turn in to teacher for final grade.**
 * Create an on-line book with illustrations explaining the reason we have seasons.
 * Place in your folder.** ||