Essential Question: How is weather created? What is Solar Energy? The driving source of energy for Earth. 1. Heats Earth's land, water, and air. 2. Causes movement in the atmosphere. Key Topics: The sun drives the weather on Earth. **Solar energy is sent through space to Earth. (radiant) ****We mostly receive heat and visible light ******We also receive UV radiation (high energy form of light) that we cannot see. Absorption and Reflection When Earth receives solar energy it can: 1. be absorbed by the atmosphere OR 2. be passed through to reach the Earth's surface. When solar energy is absorbed it becomes warmer. (it=earth) Atmospheric layers can become warmer, and so can land/water. Ozone (O )layer absorbs UV radiation = it becomes warmer. Absorption and Reflection Not all solar energy is absorbed. Some bounces off clouds or particles in the atmosphere and reflects back into space. Other Light Reflectors: Ice caps (white) reflect light that hits them most of the time. Light colored sand reflects light. Dark rocks reflects light.
comparıson of land to water ın how ıt absorbs and reflects solar radıatıon. Importance: 1. Energy absorbed causes weather! 2. Energy keeps Earth warm enough for organisms to live. 3. Reflection of some energy makes it not too hot for us to live. https://www.youtube.com/watch?v=7vtfyamu6g4 Land absorbs heat quickly and releases it quickly. Water absorbs a lot of heat. It takes longer to heat up and to lose that heat. **This regulates the temperature ranges of Earth's atmosphere. Oct 28 10:55 AM What is the Greenhouse Effect? The trapping of Earth's heat by Earth's greenhouse gases: Ex. water vapor, carbon dioxide, methane Causes the temperatures to rises Keeps Earth warm when the Sun goes down. Oct 31 11:19 AM
2016 4.7,Solar Energy, Greenhouse effect, Convection.notebook Oct 27 1:29 PM October 31, 2016 Oct 27 1:29 PM Bad Greenhouse Gases! http://www3.epa.gov/climatechange/kids/basics/today/greenhouse effect.html https://www.youtube.com/watch?v=bpjjm_hcfj0 Jan 8 2:17 PM Feb 19 3:17 PM
2016 4.7,Solar Energy, Greenhouse effect, Convection.notebook October 31, 2016 Essential Question: How does warm air and cold air move in our atmosphere? STOP for Solar Energy and Key Topics: Warm air rises and cold air drops. Greenhouse effect Jan 11 2:29 PM What is Convection? The transfer of heat energy by the movement of a liquid or a gas. Warm air rises...then it gets colder... so it starts to sink...as it gets lower it starts to heat back up so starts to rise again. The cycle never ends! This is called Convection Currents Feb 19 4:18 PM
Radiation from the sun heats Earth unevenly. Equator receives the most energy than the poles. This uneven heating set convection currents into motion. Isn't climate just weather? NO Climate is the average weather of an area over a very long period of time. Weather is the condition of the atmosphere at a certain time and specific place....climate is determined by temperature and rainfall. There are 3 climate zones determined by latitude: Tropical, Temperate, and Polar Latitude = distance from equator Feb 19 5:37 PM Feb 19 5:42 PM Polar Region 60 degree latitude to the poles North and South (90 degrees) Temperate Region 30 degrees to 60 degrees north and south latitude. Tropical Region equator towards 30 degrees north and south latitude. Polar Temperate Tropical Equator Tropical Temperate Polar Jan 15 10:50 AM
How does convection affect weather? Convection currents cause warm air from the equator to move towards the poles, and cold air to flow from the poles towards the equator. Jan 15 10:50 AM Feb 19 5:50 PM There are 3 atmospheric convection areas in the northern hemisphere and 3 in the southern hemisphere. Convection currents happen on a global scale in the atmosphere = global winds. These winds move weather systems in a specific direction. They also transfer heat energy throughout Earth.
2016 4.7,Solar Energy, Greenhouse effect, Convection.notebook October 31, 2016 Convection currents can also create breezes where land meets the sea. Morning Land heats up quicker and water takes longer. Copy this in your notebook Reverse Convection Current Night Land loses heat quicker and water does not. https://www.youtube.com/watch?v=l1qjlrnejuw Sea Breeze Land Breeze Sea Breeze Land Breeze Oct 28 12:13 PM Convection currents can also create water currents. Streamline current movement of water at/ near the surface of an ocean or other body of water. 1.Warm water currents come from equator carrying warm water to the polar regions 2. Cold water surface currents carry cold water from the polar regions towards the equator.
2 famous ocean currents in the US Feb 8 2:48 PM Feb 19 2:34 PM Jan 15 10:49 AM