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ABCTE General Science - Earth Science
Exam Questions And Answers (Guaranteed
A+)
An infrared telescope performs what important function in astronomy? - Answer✔It is used to
analyze parts of the infrared spectrum to determine the temperatures of distant stars, nebulae, and
galaxies.
Which of the following processes explains the dynamo theory and is the most likely explanation
for generating the Earth's magnetic field? - Answer✔Convection of liquid iron and nickel
flowing in the liquid outer core
What accounts for the abundance of oxygen in Earth's atmosphere? - Answer✔Oxygen is a by-
product of photosynthesis.
What force makes it possible for the process of nuclear fusion to be sustained at the Sun's core? -
Answer✔Gravity
It is predicted that in the near future, approximately 50% of the water in North America's most
important aquifers will be depleted. Which of the following measures could be used to slow the
depletion of the aquifers? - Answer✔Water conservation
Which of the following is a type of sedimentary rock? - Answer✔Breccia
Mount Fuji in Japan and Mount St. Helens in Washington are formed from alternating layers of
ash and lava, with slopes that average 30° at the summit and taper 5° degrees at the base. Which
type of volcano are they? - Answer✔Composite cones
Which part of the atmosphere includes the ozone layer? - Answer✔Stratosphere
Which process is not involved in the formation of sedimentary rocks? - Answer✔Crystallization
What percentage of the world's water supply is considered to be usable (i.e., in liquid form) fresh
drinking water? - Answer✔0.04%
Approximately 250 million years ago, 90% of all marine life and 70% of all the land vertebrates
disappeared in a massive extinction event. Which two eras are separated by this event? -
Answer✔Paleozoic and Mesozoic
1|Page
ABCTE General Science - Earth Science
Exam Questions And Answers (Guaranteed
A+)
An infrared telescope performs what important function in astronomy? - Answer✔It is used to
analyze parts of the infrared spectrum to determine the temperatures of distant stars, nebulae, and
galaxies.
Which of the following processes explains the dynamo theory and is the most likely explanation
for generating the Earth's magnetic field? - Answer✔Convection of liquid iron and nickel
flowing in the liquid outer core
What accounts for the abundance of oxygen in Earth's atmosphere? - Answer✔Oxygen is a by-
product of photosynthesis.
What force makes it possible for the process of nuclear fusion to be sustained at the Sun's core? -
Answer✔Gravity
It is predicted that in the near future, approximately 50% of the water in North America's most
important aquifers will be depleted. Which of the following measures could be used to slow the
depletion of the aquifers? - Answer✔Water conservation
Which of the following is a type of sedimentary rock? - Answer✔Breccia
Mount Fuji in Japan and Mount St. Helens in Washington are formed from alternating layers of
ash and lava, with slopes that average 30° at the summit and taper 5° degrees at the base. Which
type of volcano are they? - Answer✔Composite cones
Which part of the atmosphere includes the ozone layer? - Answer✔Stratosphere
Which process is not involved in the formation of sedimentary rocks? - Answer✔Crystallization
What percentage of the world's water supply is considered to be usable (i.e., in liquid form) fresh
drinking water? - Answer✔0.04%
Approximately 250 million years ago, 90% of all marine life and 70% of all the land vertebrates
disappeared in a massive extinction event. Which two eras are separated by this event? -
Answer✔Paleozoic and Mesozoic
1|Page
