Grade 5-Topic 5 Human Impacts on Earth's Systems

Front

Which two resources do not belong on a list of nonrenewable natural resources?

Back

sunlight, wind

Front

The graph shows the change in the percentage of forest area on Earth’s surface from 1990 to 2014. Which is the most likely reason for this change?

Back

The world population has increased.

Front

How do renewable resources differ from nonrenewable resources?

Back

Renewable resources can be replaced as quickly as people use them. Nonrenewable resources are not made fast enough to replace what is used.

Front

The world’s smallest freshwater resource is found in _____________________.

Back

rivers.

Front

The air quality in this city is hazardous to humans, plants, and animals. The Earth system that is directly changed by harmful gases in the air is the atmosphere, but the ______________ is also changed by hazardous air quality.

Back

biosphere

Front

Dana wants her school to be more environmentally aware. She observes a couple of classrooms two hours each day for a week. The list below shows Dana’s observations. Which recommendation should Dana suggest to the school that would best help to conserve energy?

• Lights are left on after class.
• Blinds are open.
• Heaters are on.
• Windows are open.
• Computers are on with no students in the classrooms.
• Students use the outlets to charge their cell phones.

Back

Keep the windows closed if the heater or air conditioner is on.

Front

Complete the sentence about the impact of dams on the environment: A positive impact of a dam is that it generates electricity without the pollution associated with burning fossil fuels. A __________________ impact is that the dam blocks the natural flow of water and alters the environment for plants and animals.

Back

negative

Front

The recycling rate for glass containers was the least in which year? Options: 1990, 2000, 1995

Back

2000

Front

Which item has not shown a consistent change in recycling rate?

Back

plastic soda bottles

Front

Using ceramic plates instead of paper plates and using cloth grocery bags instead of paper or plastic bags are both examples of _________________________.

Back

reusing