Atmosphere

• A coordinate system is a system that uses coordinates to establish position.
• Longitude - vertical lines

  Latitude - horizontal lines
• Hemisphere is defined as half of a sphere, globe or celestial body.
• The world time zone map designates the different standard time zones observed in each country.
• GPS - Global Positioning System, a satellite-based navigation system that uses signals from at least three satellites to determine the location of a receiver.
• A continent is one of Earth's main divisions of landmass.
• The ocean, divided into four major bodies of water, covers almost 3/4 of the earth.
• The Pacific arc system is also known as the Ring of Fire where a large number of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean.
• Everything around you like air, water, soil, forests, animals, and others that are provided by nature or occur naturally are called natural resources.
• Wind energy utilizes wind to generate electricity.
• The point at which Earth spins is known as the axis.
• The tilt of the earth is 23.5 degrees.
• Greenhouse gases such as carbon dioxide (CO₂), methane gas (CH₄), nitrous oxide (N₂O), and Chloroflurocarbon (CFC), are polluting the air, and trapping more heat inside of the earth, causing climate change.
• Climate change is the long-term effects that increase temperatures, and causes drastic changes in weather patterns. This is caused by the pollution of greenhouse gases.