Which of the following best describes a fission reaction involving lithium? (1 point)
a. two lithium atoms form bonds with each other, absorbing a large amount of energy.
b. the nuclei of lithium atoms join together to form heavier isotopes, and energy is released.
c. an atom of lithium absorbs electrons, undergoes an increase in energy level, and splits into fragments.
d. the nucleus of an atom of lithium splits, resulting in smaller fragments and the release of a large amount of energy.
nuclear power plants produce a great amount of energy using fission reactors. however, there are safety risks. which of the following risks are related to using nuclear power plants? (1 point)
a. storage and disposal of radioactive waste
b. production of radioactive atmospheric pollutants
c. improper handling of volatile radioactive chemicals
d. lack of adequate space to carry out reactions involving radioactive materials
which of the following natural resources does not contribute to global warming or air pollution? (1 point)
a. coal
b. natural gas
c. nuclear power
d. oil
which of the following statements about natural resources is correct? (1 point)
a. oil is more difficult to remove from the earth than coal.
b. coal is present in small quantities compared to other fossil fuels.
c. natural gas has a limited supply and an uneven worldwide distribution.
d. nuclear power produces small amounts of energy from extremely large masses of fuel.
which of the following natural resources is considered non-renewable? (1 point)
a. biofuel
b. geothermal power
c. nuclear power
d. solar power
heat energy beneath the earth's surface heats underground water into steam to operate steam turbines. this describes which of the following resources? (1 point)
a. biofuel
b. geothermal power
c. hydropower
d. nuclear power
which of the following is the most important challenge in the protection of our environment? (1 point)
a. getting society to care about environmental issues.
b. repairing long-term damage done to the environment.
c. cleaning up after a major polluting event, like an oil spill.
d. meeting society's needs while being responsible with natural resources.
which of the following chemicals is not an ozone-depleting substance in the stratosphere? (1 point)
a. methyl bromide
b. carbon tetrachloride
c. xenon
d. methyl chloroform
today we use synthetic polymers to replace natural materials such as cotton, wood, and stone. what is one disadvantage of using synthetic materials rather than natural materials? (1 point)
a. synthetic materials are often easy to produce.
b. synthetic materials often do not decay naturally.
c. synthetic materials are often much stronger than natural materials.
d. synthetic materials are often made from strong radioactive materials.
some technologies are now available to solve the problem of acid rain, which can alter the ph level of lakes and rivers. which of the following is the best technology to improve a lake affected by acid rain? (1 point)
a. new alternative energy sources
b. recycling of materials to reduce air pollution
c. an environmentally safe base to neutralize the lake
d. transportation equipment to move all aquatic life to safety
which of the following human environmental accidents has had devastating effects on groundwater, rivers, oceans, and lakes? (1 point)
a. harmful pesticides
b. nuclear accidents
c. ozone depletion
d. oil spills
when an oil spill occurs in an aquatic environment, what generally is the effect? (1 point)
a. the ecosystem is damaged but quickly rebounds.
b. no serious damage occurs since oil and water do not mix.
c. the abiotic factors are seriously affected, but the biotic are unaffected.
d. the whole ecosystem is negatively affected, and long-term damage may occur.
which of the following most correctly predicts the impact on the environment if sustainable practices are not followed? (1 point)
a. the ecosystems of the world will be uniformly damaged, but they will rebound quickly.
b. natural resources will be depleted, and the negative impact may be too severe to recover.
c. the environment will not be adversely affected because the ecosystem of the world is too large.
d. rain forests will be depleted, but the oceans will be preserved because of their geographical isolation.
heat pollution occurs when an aquatic environment experiences an increase in temperature, which can result in devastating effects to the ecosystem. which of the following is a major cause of heat pollution? (1 point)
a. airports and seaports
b. farming and agriculture
c. residential housing areas
d. factories and power plants