PERFORMANCE EXCELLENCE 10TH
EDITION TEST BANK ACTUAL EXAM
PAPER 2026 QUESTIONS WITH ANSWERS
GRADED A+
⩥ What percent of the Earth's atmosphere is Nitrogen and Oxygen.
Answer: 80% Nitrogen, 20% Oxygen
⩥ How old is Earth?. Answer: 4 1/2 billion years old
⩥ Primary Atmosphere. Answer: Hydrogen and Helium; maintained in
Sun, Earth, Saturn, Neptune and Jupiter
⩥ Secondary Atmosphere. Answer: Outgassing; rained on molten planet
to create oceans; life produced oxygen
⩥ Tertiary Atmosphere. Answer: Current atmosphere
⩥ Barometer. Answer: An instrument that measures atmospheric
pressure
,⩥ Where is atmospheric pressure highest?. Answer: Sea level
⩥ Law of Atmosphere Equation. Answer: 1 standard atmosphere of
pressure (atm) = 101325 newtons/meter^2 aka a pascal; 1.01325 bars;
760 mm Hg (Mercury)
⩥ 1 bar of pressure equals. Answer: 100,000 pascals
⩥ Why do scientists use mercury?. Answer: It's 14-15x denser than
water
⩥ Layers of Atmosphere. Answer: troposphere (sea level), stratosphere,
mesosphere, thermosphere
⩥ Tropopause. Answer: end of troposphere
⩥ Stratopause. Answer: the end of the stratosphere
⩥ Mesopause. Answer: End of mesosphere
⩥ Cellular respiration. Answer: Life gets energy from glucose which
reacts with oxygen:
C6H12O6 + 6O2 => ENERGY + 6CO2 + 6H2O
, ⩥ Average temperature of planet. Answer: Room temperature - 50
something degrees
⩥ Greenhouse Effect. Answer: Water vapor and carbon dioxide absorb
heat to keep planet warm
⩥ Anthropogenic global warming. Answer: idea of human caused global
warming; false
⩥ Ionosphere. Answer: Heat source in stratosphere
⩥ Ozonosphere. Answer: Heat source in thermosphere
⩥ Atmosphere shields us from UV rays. Answer: Near UV causes
suntan, Far UV can kill us if it wasn't for our atmosphere
⩥ Hole in the ozone layer. Answer: Naturally opens and closes
⩥ Eccentricity. Answer: Deviation of a curve or orbit from circularity.
⩥ Eccentricity of Earth. Answer: So small it's almost a perfect circle