Homework Help: science

Posted by Delilah on Wednesday, September 26, 2012 at 7:15pm.

1.
Force exerted on an area is called _____. (1 point)

pressure
temperature
gravity
mass

2.
The composition of the atmosphere is changing due to _____. (1 point)

smog
ozone depletion
increase in CO2 (carbon dioxide)
all of the above

3.
The _____ is the layer of the atmosphere farthest from Earth's surface. (1 point)

exosphere
troposphere
stratosphere
ionosphere

4.
Chlorofluorocarbons harm the ozone layer by _______. (1 point)

adding more ozone molecules
blocking ultraviolet radiation
destroying ozone molecules
destroying oxygen molecules

5.
Air pressure is greatest _____ because there are _____ molecules of air pushing down from above. (1 point)

at the top of a mountain; more
at sea level; more
in the troposphere; less
in the exosphere; less

science - Scott, Wednesday, September 26, 2012 at 8:03pm
1. a

2. d

3. a

4. c

5. b
science - Gracie, Thursday, October 4, 2012 at 9:16pm
1. a
2. c
3. a
4. b
5. i dont know : (
science - Gracie, Thursday, October 4, 2012 at 9:18pm
1. a
2. c
3. a
4. b
5. i dont know : (
science - all about me, Wednesday, October 17, 2012 at 11:05pm
you go to a virtual online scool dont u i see yall be cheating you must go to connections acadamy

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