6th grade midterm 1

2. a landform with high elevation and high relief.
3. an exact copy of something on a much smaller scale.
7. the shape of the land determined by elevation, relief, and landforms.
10. a hill of sand piled by the wind.
11. The difference between the highest and lowest points of an area.
12. a line that forms the boundary between the land and the ocean or a lake.
14. part of the Earth that contains living things.
17. all the frozen water on the Earth (ice, snow, glaciers); subsystem of the hydrosphere.
18. The height about sea level of land or an object.

1. thin layer of gas surrounding the Earth. This is Earth’s outermost layer.
4. a landform made of sediment that is deposited where a river flows into an ocean or lake.
5. a feature on the surface of earth, such as a coastline, dune, or mountain.
6. a repeating flow of matter and energy through different components.
8. all the water on the Earth including in the crust and atmosphere.
9. a process in which map makers determine distances and elevations using instruments and the principals of geometry.
11. a natural stream of water that flows into another body of water such as an ocean, lake, or another river.
13. a loop in which a signal or action triggers another signal or action.
15. all the rock and metal that forms most of Earth’s mass.
16. a group of parts that work together as a whole.