Departamento de Tecnología 2010‐2011
1. Short answer questions a) Explain with your own words the greenhouse effect. b) What does the term solar heat mean? c) Name four greenhouse gases. d) Why are greenhouse gases in the atmosphere important? e) What do you think would happen to the earth if there was an increases amount of greenhouse gases in the atmosphere?. f) Draw a diagram that includes the sun, the earth and the earth’s atmosphere to show how the greenhouse effect works 2. Circle the correct answer
A) Seasonal changes in temperature are
a. A sign of global warming
b. Due to the tilt in the earth’s axis
c. Both a. and b. above
d. None of the above
B) Ice ages usually last for
a. About a hundred years
b. Hundred of years
c. Thousand of years
d. Millons of years
C) Right now, what is happening to the temperature on earth?
a. It is rising over just the last 100 years b. It is rising very slowly over thousand of years c. It is falling over the last 100 years d. It is staying about the same
D) Carbon dioxide
a. Occurs naturally in earth’s atmosphere
b. Is called greenhouse gas
c. Is emitted by automobiles
d. All of the above
E) Greenhouse gases history
a. Occurs naturally in the earth’s atmosphere
b. Help to regulate the earth’s temperature
c. Both a. and b. above
d. None of the above
3. Work with your partner to match the words in Column A below with the words in Column B COLUMN A
COLUMN B
Oil
Rain
Exhaust
Spill
Catalytic
Fumes
Ecological
Disaster
Greenhouse
Layer
Acid
Effect
Ozone
Warming
Global
Converter
4. Which ecological disasters do you remember?. 5. What are the names of the three gases that can dissolve in rain to make it acidic? 6. What can acid rain do to the environment? 7. What do catalytic Converters do?
8. Fill in the blanks Fill in the blank spaces with the missing words below: Carbon Dioxide, one of the ......................... Gases, not only exists naturally in the atmosphere but is also produced when humans fossil fuels (coal, oil and gas). Cars, ...................... and factories all burn................... for ...................... (to make a car move or generate electricity). This adds more.................... .................... to the atmosphere, ................ the blanket of greenhouse gases surrounding the earth. This means that fewer rays of ..................... from the sun are able to get ............ out into space. So, much like a ............... duvet keeps you warmer at night, the thicker blanket of......................... is warming the earth up and changing our............................ Greenhouse heat energy carbon dioxide Burn Climate thicker fossil fuels Thickening gases power stations back