GY 101 UA TEST 2 QUESTIONS WITH
CORRECT ANSWERS LATEST UPDATE
2026
Section 1: Atmospheric Pressure & Gas Laws
1. If a gas cools under constant pressure, the molecules within it have ______ kinetic
energy and therefore gas volume will be ______.
A) more; larger
B) less; smaller
C) more; smaller
D) less; larger
Answer: B) less; smaller
Rationale: Cooling reduces molecular kinetic energy, allowing molecules to pack more
closely together, decreasing volume under constant pressure .
2. In accordance with Boyle's Law, a gas under constant temperature will ______ in
volume when the pressure is ______.
A) increase; increased
B) decrease; decreased
C) decrease; increased
D) remain the same; increased
Answer: C) decrease; increased
, Rationale: Boyle's Law states that pressure and volume are inversely proportional at
constant temperature .
3. Which statement is true regarding the relationship between air pressure and
altitude?
A) As one moves up, pressure increases
B) As one moves up, pressure decreases
C) Pressure remains constant at all altitudes
D) Pressure fluctuates randomly with altitude
Answer: B) As one moves up, pressure decreases
Rationale: Atmospheric pressure decreases with altitude because there is less air mass
above exerting force .
4. What is true regarding high or low pressure for a parcel of air at the surface?
A) Higher temperature, lower density air rises, creating lower pressure at surface
B) Higher temperature, higher density air sinks, creating higher pressure
C) Lower temperature, lower density air rises, creating lower pressure
D) Lower temperature, higher density air rises, creating higher pressure
Answer: A) Higher temperature, lower density air rises, creating lower pressure at
surface
Rationale: Warm air expands, becomes less dense, rises, and creates lower surface
pressure .
5. What two variables determine air pressure?
A) Temperature and volume
B) Density and temperature
CORRECT ANSWERS LATEST UPDATE
2026
Section 1: Atmospheric Pressure & Gas Laws
1. If a gas cools under constant pressure, the molecules within it have ______ kinetic
energy and therefore gas volume will be ______.
A) more; larger
B) less; smaller
C) more; smaller
D) less; larger
Answer: B) less; smaller
Rationale: Cooling reduces molecular kinetic energy, allowing molecules to pack more
closely together, decreasing volume under constant pressure .
2. In accordance with Boyle's Law, a gas under constant temperature will ______ in
volume when the pressure is ______.
A) increase; increased
B) decrease; decreased
C) decrease; increased
D) remain the same; increased
Answer: C) decrease; increased
, Rationale: Boyle's Law states that pressure and volume are inversely proportional at
constant temperature .
3. Which statement is true regarding the relationship between air pressure and
altitude?
A) As one moves up, pressure increases
B) As one moves up, pressure decreases
C) Pressure remains constant at all altitudes
D) Pressure fluctuates randomly with altitude
Answer: B) As one moves up, pressure decreases
Rationale: Atmospheric pressure decreases with altitude because there is less air mass
above exerting force .
4. What is true regarding high or low pressure for a parcel of air at the surface?
A) Higher temperature, lower density air rises, creating lower pressure at surface
B) Higher temperature, higher density air sinks, creating higher pressure
C) Lower temperature, lower density air rises, creating lower pressure
D) Lower temperature, higher density air rises, creating higher pressure
Answer: A) Higher temperature, lower density air rises, creating lower pressure at
surface
Rationale: Warm air expands, becomes less dense, rises, and creates lower surface
pressure .
5. What two variables determine air pressure?
A) Temperature and volume
B) Density and temperature
