ESRM 100 EXAM 1 PRACTICE QUESTIONS
Which of the following events has increased the impact of humans on the environment?
- Answers -1. Advances in technology
2. Use of tools for hunting
As described in this chapter, environmental indicators: - Answers -can be used to
analyze the health of natural systems
Which statement regarding a global environmental indicator is NOT correct? - Answers
-Worldwide grain production has increased fairly steadily since 1950, but worldwide
production of grain per capita has decreased dramatically over the same period.
The measured concentration of CO2 in the atmosphere is an example of - Answers -an
environmental indicator
An example of a species that is still endangered and needs further assistance to
recover is the - Answers -snow leopard
Which of the following statements about atoms and molecules is CORRECT? -
Answers -Isotopes are the result of varying numbers of neutrons in atoms of the same
element.
Which of the following does NOT demonstrate the law of conservation of matter? -
Answers -PbO + C -> 2 Pb + CO2
because there are more atoms of lead and carbon on the right side than on the left side
Pure water has a pH of 7 because - Answers -its H+ concentration is equal to its OH-
concentration
Which of the following is NOT a type of organic biological molecule? - Answers -Salts
If there are 10,000 J of chemical energy contained in a specified amount of natural gas,
then the amount of electricity that could be produced would be - Answers -something
less than 10,000 J, depending on the efficiency of the generator
A lake that has been affected by acid rain has a pH of 4. How many more times acidic is
the lake water than seawater? - Answers -10,000
Seawater has a pH of 8, so there's a difference of 4 pH units, so there's a difference in
hydrogen ion concentration of 10^4.
An automobile with an internal combustion engine converts the potential energy of
gasoline (44 MJ/kg) into the kinetic energy of the moving pistons. If the engine is 10%
Which of the following events has increased the impact of humans on the environment?
- Answers -1. Advances in technology
2. Use of tools for hunting
As described in this chapter, environmental indicators: - Answers -can be used to
analyze the health of natural systems
Which statement regarding a global environmental indicator is NOT correct? - Answers
-Worldwide grain production has increased fairly steadily since 1950, but worldwide
production of grain per capita has decreased dramatically over the same period.
The measured concentration of CO2 in the atmosphere is an example of - Answers -an
environmental indicator
An example of a species that is still endangered and needs further assistance to
recover is the - Answers -snow leopard
Which of the following statements about atoms and molecules is CORRECT? -
Answers -Isotopes are the result of varying numbers of neutrons in atoms of the same
element.
Which of the following does NOT demonstrate the law of conservation of matter? -
Answers -PbO + C -> 2 Pb + CO2
because there are more atoms of lead and carbon on the right side than on the left side
Pure water has a pH of 7 because - Answers -its H+ concentration is equal to its OH-
concentration
Which of the following is NOT a type of organic biological molecule? - Answers -Salts
If there are 10,000 J of chemical energy contained in a specified amount of natural gas,
then the amount of electricity that could be produced would be - Answers -something
less than 10,000 J, depending on the efficiency of the generator
A lake that has been affected by acid rain has a pH of 4. How many more times acidic is
the lake water than seawater? - Answers -10,000
Seawater has a pH of 8, so there's a difference of 4 pH units, so there's a difference in
hydrogen ion concentration of 10^4.
An automobile with an internal combustion engine converts the potential energy of
gasoline (44 MJ/kg) into the kinetic energy of the moving pistons. If the engine is 10%
