Semester 2 Final Review

Climate change is...

• A decrease in the temperature of our atmosphere.

• An increase in the humidity of our atmosphere.

• A decrease in the average wind speed.

• An increase in the temperature of our atmosphere.

Select the example below that is a positive effect humans have had on the environment.

• Littering plastic bags and soda cans at school.

• Cutting down forests for paper.

• Recycling metal cans, plastic bottle, and paper products.

• Watering your lawn in the middle of a sunny day.

Select the example below that is a negative effect humans have had on the environment.

• Packaging food items in plastic.

• Replanting trees in a deforested area.

• Using solar panels to generate electricity.

• Reusing paper for scratch paper

Which sentence best explains why greenhouse gases are good for the Earth in small amounts.

• Greenhouse gases keep our Earth warm, but not too warm by keeping the Sun's heat in our atmosphere.

• Greenhouse gases keep the Earth warm by keeping the Sun's heat out of our atmosphere.

• Greenhouse gases keep our Earth freezing by repelling all the Sun'd heat.

• Greenhouse gases keep our Earth warm by keeping all the Sun's heat that is radiated by the surface of the Earth in our atmosphere.

All the following is evidence that support climate change EXCEPT...

• The amount of precipitation is decreasing in some areas.

• The average temperature on Earth id increasing.

• Glaciers (large pieces of floating ice) are becoming larger at the poles.

• Storms are becoming stronger and more frequent.

Compare the explanations for the increase in greenhouse gases below and choose the best explanation.

• Humans have causes the increase in greenhouse gases by burning more fossil fuels.

• Cows have caused the increase in greenhouse gases by releasing large amounts of methane in their farts.

• Farmers have caused the increase in greenhouse gases by planting tree around their farms.

• Humans have causes the increase in greenhouse gases by recycling glass, paper, and aluminum.

Human activities are contributing to climate change by...

• Increasing the amount of oxygen in the atmosphere.

• Adding more pollution to the oceans and seas.

• Adding to the amount of greenhouse gases in our atmosphere.

• Taking away carbon dioxide in our drinking water.

Of all the water on our planet only about ___ is freshwater we can use in rivers and lakes.

• 50%

• 18%

• 1%

• 97%

Read the following sentence and determine which characteristic of life best fits this example.

A dog is made up of skin cells, brain cells, lung cells, stomach cells, bone cells, muscle cells, and many more types of cells.

• Made up of one or more cells.

• Grow and develop.

• Repsond to environment.

• Adapt to environment.

Read the following sentence and determine which characteristic of life best fits this example.

A dog ate its breakfast and than ran around the room.

• Made up of one or more cells.

• Obtain (gather) and use energy (move).

• Grow and develop

• Reproduce