1.The Earth spins on its axis, each spin is called a rotation. How long does each rotation take? 23 hours 56 min and 4 sec What do we see on Earth each time it rotates? Day and Night 2.The Earth orbits the sun, this is revolution -- How long does it take the Earth to revolve around the sun? 365 and ¼ days

3.) Rotation4.) Revolution

5.Select the button on the bottom that is marked “Earth” this will make the globe tilt like Earth does. How many degrees (inclination angle) is Earth tilted? 23 degrees 6.Drag the globe around its orbit until you are at “Summer Solstice” (when spring changes to summer). Which hemisphere is tilted towards the sun? Northern 7.7.

8.Are these examples of direct or indirect light? Direct Light 9.What does the thermometer say for the temperatures? “The temperature is between Mild and Warm” 10. The sun’s path in summer

10.Drag the Earth around its orbit until you are at “Winter Solstice” (when fall changes to winter). Which hemisphere is tilted towards the sun? Southern Are these examples of direct or indirect light? Indirect

9.What does the thermometer say for the temperatures? “The temperature is between Cool and Mild” 10. The sun’s path in Winter

15.Is the sun’s path higher or lower in the winter when compared to the summer? Lower 16.When the sun’s path is higher in the sky, the light is direct/indirect (choose one) and temperatures are warmer/cooler (choose one) 17.When the sun’s path is lower in the sky, the light is direct/indirect (choose one) and temperatures are warmer/cooler (choose one) 18.Now click the button marked “Venus” at the bottom. How many degrees (inclination angle) is globe tilted? 2 degrees

19.Hit the “fast >>” button and watch the Sunlight Angle and thermometer as “Venus” completes one full revolution (1 year). Explain what you see happening in these two boxes. Sunlight Angle (include a drawing of the arrows): The angle doesn’t change, direct sunlight is year round Thermometer: The temperature remains the same throughout the year 20. Based on your observations, does Venus have seasons like Earth (cold winter, warm summer)? Nope Explain how you know this. The temperature stays the same year round and the planet doesn’t have tilt (which causes seasons)

21.Do you think humans (and our plants-think like a farmer) would survive if Earth was tilted 0 degrees? Explain No, the Earth would quickly get too hot from direct sunlight near the equator, while getting very cold away from the equator 22.Now click the button marked “Uranus” at the bottom. How many degrees (inclination angle) is globe tilted? 86 degrees Hit “slow >” and watch the Sunlight Angle box as “Uranus” orbits the sun. 23.What is the sunlight angle of Uranus like in summer? Direct rays What is the temperature range in the summer? Hot to Mild

24.What is the sunlight angle of Uranus like in winter? Zero/Very Low What is the temperature range in the winter? COLD 25.Watch the clock in the box with the house and sun’s path. Does the sun ever rise in the winter on Uranus? No Where on Earth do we see this same type of sunlight angle on Earth during the winter? The Poles 26.Do you think humans (and our plants-think like a farmer) would survive if Earth was tilted 90 degrees? Explain It wouldn’t be too good, only spring and fall would be growing season, winters would be very cold and summers very hot

A season is a subdivision of the year, marked by changes in weather, ecology, and hours of daylight. Seasons result from the yearly revolution of the Earth around the Sun and the tilt of the Earth's axis relative to the plane of revolution When a hemisphere is pointed towards the sun due to the Earth’s tilt, that hemisphere will get direct light which leads to hot temperatures. We call this season summer. When a hemisphere like us in the Northern Hemisphere, starts to tilt away from the sun, we start to get indirect light, which leads to cold temperatures and eventually winter