Midterm Exam Study Guide Answers

6-4.1 Gas Composition: Nitrogen 78% Oxygen 21% Other (Trace) 1%

6-4.1 Troposphere Stratosphere Mesosphere Thermosphere Exosphere Trains start moving through exits.

6-4.1 Troposphere

6-4.2 Condensation Surface water-flow and groundwater flow Evaporation and Transpiration Precipitation

6-4.3 Round and puffy with a flat bottom.

6-4.3 Stratus

6-4.3 White = Fair weather Dark = Rain

6-4.3 Heavy rain and thunderstorms.

6-4.4 A front that stays in one place a long time.

6-4.4 When two cold air masses are pushing in on each side of a warm air mass.

6-4.4 When a cold air mass pushes against and under a warm air mass.

6-4.4 When a warm air mass pushes against and under a cold air mass.

6-4.5 A Sling Psychrometer

6-4.5 A Barometer in MB’s

6-4.5 Anemometer

6-4.6 Lines on a weather map that show high and low pressure systems.

6-4.6 Satellite

6-4.6 Cloudy Barometric Pressure = 1010mb Wind Speed = 9-14 mph Wind from east

6-4.7 The main source of energy. It comes from the sun, giving us heat and light.

6-4.7 The Greenhouse Effect

6-4.8 Convection currents in the atmosphere cause Global Winds to develop.

6-4.8 Climate zones occur because of uneven heating of the earth.

6-4.9 Trade winds blow east to west in tropical region.

6-4.9 Westerly winds blow west to east in temperate region.

6-4.9 Jet Stream

6-5.1 Sources of electrical energy include: stored chemical energy in batteries; solar energy in solar cells; fuels or hydroelectric energy in generators.

6-5.1 Potential energy – A stretched rubber band. Water behind a dam. Ex(s): A stretched rubber band. Water behind a dam.

6-5.1 Kinetic energy energy an object has due to its motion. Mechanical kinetic energy increases as an object moves faster. (Ex): A moving car.

6-5.2 Energy can never be created or destroyed. It can only be transformed from one form into another.

6-5.3 Electromagnets

6-5.3 With Generators That produce electric current when a coil of wire wrapped around an iron core is rotated near a magnet.

6-5.3 Unlike poles = attract. Like poles = repel

6-5.4 Electrical energy can be transformed to light, sound, heat, and mechanical motion in an electric circuit

6-5.4 *a source of electrical energy, *a conductor of the electrical energy (wire) connected to the energy source, *a device that uses and transforms the electrical energy.

6-5.5 Convection

6-5.5 Conduction

6-5.5 Radiation

6-5.6 Energy

6-5.6 Work means to: apply a force to an object over a distance, and the object moves in response to the force.

6-5.6 Evidence of energy is when work is being done.

6-5.7-8 Device that helps reduce the amount of force required to do work.

6-5.7-8 Pulley – a grooved wheel with rope running along groove. Lever – rigid bar or board that is free to move around a fixed point called a fulcrum.

6-5.7-8 Inclined Plane – sloping surface that reduces amount of force required to lift object.