More Pollution and Waste

To prevent groundwater contamination, sanitary landfills are:

• Located far from populated areas
• Lined with plastic and clay
• Covered with cement
• Located on slopes so that water runs downhill

Tags

NGSS.MS-ESS3-3

A process in which mixed garbage is burned at very high temperatures is:

• recovery
• incineration
• leachate
• source reduction 

What is a benefit of using incinerators?

• Methane gas produced by decomposition can be used like natural gas

• It is very cheap

• Reduces the amount of solid waste

• It is highly regulated

Which gas is produced at landfills?

• Methane
• Ethanol
• Hexane
• Diesel

Analyze Figure 3. Which statement below best describes the line graph.

• Total waste generation in the United States has more than doubled in the past 40 years. The waste generation per person has not doubled, but still has increased.

• Total waste generation in the world has more than doubled in the past 40 years. The waste generation per person has not doubled, but still has increased.

• Total waste generation in the United States has more than doubled in the past 40 years. The waste generation per person has also doubled, but both are decreasing.

• None of the choices describes this figure.

How can leachate in a landfill affect drinking water in nearby wells?

• Leachate forms when when water seeps down through a landfill and collects dissolved chemicals from decomposing garbage.

• If a landfill is not monitored and functioning improperly the leachate can flow into groundwater.

• Leachate may contain chemicals from paints, pesticides, cleaners, cans, batteries, and appliances.

• Methane reacts with leachate causing explosions.

Tags

NGSS.MS-PS1-3

In a landfill, MSW is covered with soil every day to reduce the impact of

• rats, seagulls and smells

• methane, leachate and litter

• leachate, rats and groundwater pollution

• surface water pollution and air pollution

Tags

NGSS.MS-ESS3-3

Which soil is best to have under a landfill?

• sand

• silt

• clay

• loam

Which of the following is the primary method of waste disposal in the U.S.?

• Incineration

• Landfills

• Composting

• Recycling

Tags

NGSS.MS-ESS3-3

E-waste can be recycled to extract ____.

• gold, rare earths, valuable metals

• carbon compounds

• organic solids

• personal identification information

Tags

NGSS.MS-PS1-3