The pressure of
gas molecule inside the tyre is…….than outside.
a) smaller
b)greater
c) same
d) variable
The atmosphere is the layer of …….that surrounds the earth.
a) liquids
b) gases
c) solids
d) plasma
Explanation:An atmosphere is a layer of gas or layers of gases that envelope a planet, and is held in place by the gravity of the planetary body. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low.
Atmosphere pressure varies with……
a) force
b) height
c) volume
d) area
As mountain climber ascends to higher altitudes, the atmospheric pressure…….
a) remains same
b) increase
c) decreases
d) none of these
The atmospheric pressure will be greatest…….
a) in Murree
b) in Lahore
c) in Karachi
d)on top of K2
Explanation:As elevation increases, there is less overlying atmospheric mass, so that atmospheric pressure decreases with increasing elevation. Because the atmosphere is thin relative to the Earth's radius especially the dense atmospheric layer at low altitudes the Earth's gravitational acceleration as a function of altitude can be approximated as constant and contributes little to this fall off.
The atmospheric pressure at 20000 feet is only…….of that at sea level.
a) one fourth
b) one third
c) one-half
d) double
