When Pluto was cast out from the list of Planets?
A. September 24, 2006
B. April 28, 2004
C. January 26, 2006
D. August 24, 2006
P Waves are also said to be __________ waves?
A. Push-pull
B. Side-side
C. Up-down
D. None of the above
In general, the most destructive earthquake waves are the __________ ?
A. P waves
B. S waves
C. Surface waves
D. All of the above
Place directly above focus on Earth’s surface is known as _________?
A. Strike
B. Comma
C. Epicenter
D. Origin
Which of the following is responsible for largest amount of oxygen on earth?
a. Peat bogs
B. Algae
C. Trees
D. None of these
The reaction between methane and chlorine in diffused sunlight is__________?
A. Oxidation
B. Reduction
C. Polymerisation
D. Radical substitution
Earth rotates the sun in___________?
A. 23 hours 56 min 4 sec
B. 24 hours
C. 23 hours 57 min 9 sec
D. Non of above
During a total solar eclipse there is most likely to be_____________?
A. A decrease in the rate of photosynthesis
B. An increase in the rate of photosynthesis
C. A decrease in the rate of respiration
D. No effect on either photosynthesis or respiration
What prevents the earth’s atmosphere from drifting away into space?
A. Gravity
B. Ozone layer
C. Troposphere
D. Ecosystem