Chapter 2: Planet Earth

Solar Energy

100

What is Solar Energy

Energy from the sun

200

The tilt of the earth causes what?

seasons 

300

What are the seasons in the Tropics and what causes them

Wet and dry

Monsoons

400

What factors influence the amount of solar energy the earth receives. (4 total)

Rotation

Revolution

Tilt

Latitude 

500

Describe how the seasons change

Winter: the north pole is tilted away from the sun

Summer: the north pole it tilted towards the sun

Spring: the north pole starts to to point towards the sun

Fall: the north pole is starting to point away from the sun.

Water Cycle

100

What percent of the earth is made up of salt water

71

200

What percent of earths water is fresh water

3

300

What is the difference between surface and ground water

Surface water is found in streams, rivers, and lakes 

Groundwater is under the earths surface

400

list 2 water problems and 2 water benefits we have. 

Problems: lack of availability; droughts, overuse
               no clean water
               flooding
Benefits:  Food
               Power
               recreation

500

describe in detail the water cycle.

energy from the sun heats water causing it to evaporate into the atmosphere.  The water vapor cools causing condensation forming clouds.  Water droplets become to heavy and fall back to earth as precipitation, rain, snow, sleet, or hail.  Some water is absorbed into the soil as ground water and some runs into streams, rivers, or lake and is called runoff. 

The Land

100

list 4 common landforms

mountains

valleys

plains

islands

200

who came up with the theory of plate tectonics

Alfred Wegener

300

Describe what happens when plates slide past eachother

earthquakes

400

describe what happens when plates separate 

underwater mountains

volcanic islands 

500

describe what happens when plates collide

2 oceanic plates: Ocean Trenches

Oceanic & Continental: mountain ranges

2 continental: mountain ranges 

Vocab 1

100

Landforms

shapes on the plantes surface

200

tropic

regions close to the equator

300

rotation and revolution

Rev. one trip around the sun

Rot. 1 complete spin of earth on its axis

400

lava

magma that reaches the earths surface

500

plate techtonics

earths surface is divided into 12 slow moving plates or pieces of earths crust

Vocab 2

100

earthquakes

sudden violent movements of earths crust

200

water cycle

movement of water from earths surface to the atmosphere and back

300

glaciers

large areas of slow moving ice

400

water vapor

water that is in the air as an invisible gas

500

Weathering and erosion

Weathering is the process by which rock is broken down into smaller pieces

Erosion is the movement of sediment from one location to another