Name:__________________________________________________________________ Period:_______ 7th Grade Final Exam Review KEY Equator-Imaginary line that circles the globe halfway between the North and South Poles, 0° N, S, Latitude, on the Fall and Spring Equinox the sun’s rays are strongest on the Equator. Prime Meridian- Imaginary line that runs through Greenwich, England, 0° E,W, Longitude Tropic of Cancer- 23.5°N latitude, on the summer solstice the sun shines directly on it Tropic of Capricorn- 23.5° S Latitude, on the winter solstice the sun shines directly on it Hemisphere-One half of the earth’s surface, Northern and Southern Hemisphere, East and West Hemisphere Geography- is the study of the Earth and its people Axis- Is an imaginary line that runs from the north pole to the south pole. Aquifer- underground layers of rock through with water flows Biome- Areas such as rainforest, desert, grasslands, and tundra in which particular kinds of plants and animals have adapted to a particular climate. Currents- steadily flowing streams of water in the world’s seas Solstice- Day when the suns rays are farthest from the equator June 21- summer solstice longest day of year (sun’s rays most direct on the tropic of cancer) December 22- winter solstice shortest day of year (sun’s rays are most direct on tropic of Capricorn) Earth’s Tilt- 23.5 °, causes Earth’s seasons Equinox- When Earth’s poles are at right angles to the sun, ½ way between summer and winter solstic, Every place on Earth has 12 hour days and 12 hour nights!! Spring- Mar 20thFall- Sept 23rd Irrigation- process in which water is collected and distributed to crops Weathering- When water and ice, chemicals, and plants break rocks apart into smaller pieces. Erosion- Water, wind, and ice move away weathered rock Climate- Usual predictable weather patterns in an area over many years. Weather- Changes in temperature, wind direction and speed, and air moisture that take place over a short period of time. Ecosystems- Place shard by plants and animals that depend on one another for survival Biodiversity- The variety of plants and animals living on the planet. Deforestation- cutting down trees without replacing them Answer the following questions: 1. How long is a millennium? How long is a century? How long is a decade? 1,000 years 100 years 10 years 2. What is the difference between a rotation and a revolution? How long do each take? Revolution one year for the Earth to orbit the sun, or to complete one revolution. 365 1/4 days Rotation- One complete spin on Earth’s axis is called a rotation. Each rotation takes 24 hours= 1 day 3. What are the five themes of geography? Describe each. Location-is the position of a place on Earth’s surface Place- describes the physical and human characteristics that make a location unique human environment interaction- How people affect their environment and how their environment affects them. Movement- explains how and why people and things move and how they are connected. Regions- Areas that share common characteristics 4. What is the difference between relative and absolute location? Absolute location: is the exact spot on Earth where something is located Ex- 45°N 15° E Relative location: describes where a feature is in relation to the features around it 5. How many continents are there? Name them. 7 continents- Asia, Africa, Europe, Australia, Antarctica, North America, South America 6. What causes the seasons on Earth? The Earth’s Tilt, @ 23.5° 7. What are lines of Latitude? Which way do they run? Horizontal Lines that run around the globe NORTH & SOUTH of the Equator 8. What are lines of Longitude? Which way do they run? They measure what? Vertical Lines, run from north pole to south pole, EAST & WEST Of the Prime Meridian 9. What does a political map show? What does a historical map show? What does a physical map show? Outlines of countries, historical movement or how things have changed, the earth’s surface and physical features 10. How do tectonic plates cause earthquakes? What happens when continental and oceanic plates collide? When two tectonic plates collide and create sudden and violent movements of the earth’s crust the oceanic plate tips down and slides beneath the continental plate forming a deep ocean trench. 11. What is the Ring of Fire? Where is it located? The ring of fire is the most active tectonic and volcanic area in the world. It is located on the edge of the pacific plate. (Western US, W. South America, East Asia, Japan) 12. Describe what occurs between the Earth and Sun on our Summer Solstice. When does the Summer Solstice typically occur? Day when the suns rays are farthest from the equator, hit most directly on the Tropic of Cancer June 21- summer solstice longest day of year 13. Describe what occurs between the Earth and Sun on our Winter Solstice. When does the Winter Solstice typically occur? Day when the sun’s rays are farthest from the equator, they hit most directly on the tropic of Capricorn. December 22- shortest day of year 14. Where do the Sun’s vertical rays strike on our spring and fall equinox? The Equator 15. What are the four layers of the Earth? Inner core, outer core, mantel, crust 16. What does a human geographer study? People and their activities like: Religions, languages, ways of life, food, clothing, traditions 17. What does a physical geographer study? Examines earth’s land areas like: Bodies of water, plant life, mountains, canyons, volcanoes, deserts, plains, forests 18. What is an isthmus? Narrow strip of land that connects two larger land masses 19. What is a plateau? Flatlands at higher elevations 20. What is a delta? the flat area at the mouth of some rivers where the mainstream splits up into several distributaries 21. What is the difference between weather and climate? Weather is the day to day variations of temperature, climate is the weather over a long period of time 22. List and describe the steps of the water cycle. Precipitation: Droplets become heavy and fall back down to Earth in form of rain, hail, sleet, or snow Evaporation: Sun heats surface water, which evaporates into the atmosphere Condensation: Water vapor cools as it rises and forms liquid droplets, which forms clouds 23. Describe how a rain shadow works. When mountains that have an affect on rainfall that blocks rain from reaching the interior regions. 24. What are the 5 major world climate zones? Give an example of each. 1. Dry: Desert and Steppe 2. Tropical (Low Latitude): tropical Savanna, Tropical Rain Forest 3. Mid Latitude: Humid continental, Mediterranean 4.High Latitude: Ice Cap, Tundra, Sub arctic 5. Highland Climate: can be found in all climate zones 25. How do large cities affect climates? Urban climate- when urban areas temperature is different from rural areas and are caused by lots of buildings and changes to the landscape that allow the land to hold on to the sun’s heat. 26. What is the Hydrosphere? All of earth’s water above and below ground 27. What is the Biosphere? Collection of planes and animals of all types that live on Earth 28. What is the Lithosphere? Another name for Earth’s crust, includes all land above and below the oceans. 29. What is the Atmosphere? Layer of oxygen and other gases that surrounds the Earth.