Across
- 3. -the wearing away of soil and rock particles by waves, wind, running water, or glaciers
- 7. The equator is an imaginary circle around the earth, halfway between the north and south poles.
- 8. ROCK -the rock formation that is the source of mineral fragments in the soil
- 11. -the chemical makeup of a rock; describes either the minerals or other materials in the rock
- 14. rose - is a design on a map that shows direction. It points which way is north, south, east, west, and some intermediate directions on the map
- 17. -the chemical and physical processes that break down rock at Earth's surface
- 19. -the layer of soil beneath the topsoil that contains mostly clay and other minerals.
- 20. Projection -A conic projection is a type of map in which a cone is wrapped around a sphere (the globe), and the details of the globe are projected onto the conic surface. Then, the cone is unwrapped into a flat surface.
- 22. rich, dark organic material formed by decay of vegetable matter, essential to soil's fertility
Down
- 1. FARMING- planting along the natural contours of the land to reduce soil erosion
- 2. map -A topographic map is a map that represents elevations on it.
- 4. DUST BOWL- severe dust storms through out the Midwestern United States in the 1930 due to drought and over farming
- 5. WEATHERING -the processes that break rock into smaller pieces
- 6. scale- The scale of a map is the ratio between the distance between two points found on the map as compared to the actual distance between these points in the real world.
- 9. a mixture of humus, clay, and other minerals that forms the crumbly, topmost layer of soil
- 10. -loose materials such as rock fragments, mineral grains, and bits of shell that have been moved by wind, water, ice, or gravity
- 12. projections -There are many ways of making maps. Since a map is a 2-dimensional representation of a curved surface (a globe), the map cannot be perfectly accurate. These map-making methods are called projections because cartographers have to project a 3-D surface onto a 2-D map. There are many different types of projections that have different uses. Some projections preserve compass directions but distort areas (like Mercator projections), while others preserve area but distort distances and compass directions (like Robinson projections).
- 13. chemical substance that an organism requires to live
- 14. WEATHERING -the process that breaks down rock through chemical changes
- 15. MATERIAL -is matter that has come from a once-living organism
- 16. the solid layer of rock beneath the soil
- 18. CONSERVATION- is the management of soil to prevent its destruction
- 21. Northern Hemisphere- is the half of the Earth that is north of the equator