Human Influences on the environment-G6

Human Influences on the environment

Science Grade 6

Multiple Choice

What type of pollution is this?

• Air pollution

• Noise pollution

• Water pollution

• Soil pollution

Multiple Choice

What kind of pollution is this?

• Air pollution

• Noise pollution

• Water pollution

• Soil pollution

Ozone depletion

• Ozone is a gas. There is a layer of ozone

  high up in the atmosphere.

• The sun emits ultraviolet light. These

  UV rays can cause skin cancer and eye

  damage in humans.

• Ozone layer protects organisms on the

  Earth from harmful UV radiation. Ozone

  absorbs UV rays from the Sun.

“Hole” in the Ozone Layer

• 1985, scientist discovered that there were less ozone, especially in the Antarctic spring. they called this the ozone hole.

• The hole is currently switching through phases of

  growth and diminishment, but it has been stabilizing

  over the past few days. The forecast from CAMS

  (Copernicus Atmosphere Monitoring Service (CAMS)—a

  European Union ) suggests it will remain small this

  week, and that it’s still on track to become the smallest

  hole seen in 30 years, said Antje Inness-Scientist.

What causes the ozone hole

• Gases called CFS ( Chloro-fluorocarbon ) caused the problems with the ozone layer.

• CFCs are man-made. They were used in

  air-conditioners, refrigerators and aerosol cans.

• CFCs rise up high into the atmosphere. They react with

  ozone and break it down.

Multiple Choice

Where is the ozone layer ?

• Exosphere

• Mesosphere

• Stratosphere

• Troposphere

Multiple Choice

Which statement is incorrect about ozone layer.

• Ozone is a gas.

• The ozone layer is about 36km above the ground.

• Ozone layer reduces the quantity of UV radiation that reaches the ground.

Multiple Select

Describe how UV rays can harm a person? Choose all that applies.

• promotes skin fairness

• eye damage

• Skin cancer

Summary

• Pollution means adding harmful things to the environment.

• Ozone is gas found in a layer high up in the atmosphere. It protects us from the ultraviolet radiation.

• CFC's have damaged the ozone layer over the antarctic, but are now banned and the ozone layer is recovering.

Activity: Mini Project

• Directions: Each student will come up with a “slogan” about the environment.

• Slogan-a short and striking or memorable phrase used in advertising.

Rubric

• Originality/Relevance: 10 points

• Creativeness: 5 points

• Grammar/Spelling: 5 points

• TOTAL : 20 points