Matter & Its Interactions
What is formed when two or more elements are chemically combined?
A. atom
B. composite
C. compound
D. mixture
C. compound
Which of these contains most of Earth’s water?
A. oceans
B. rivers
C. lakes
D. glaciers
A. oceans
(double)
An example of non-point source of pollution is
A. wastewater from a leaking pipe
B. fertilizer runoff from lawns
C. oil from a leaking underground tank
D. chemicals released from a paper mill
B. fertilizer runoff from lawns
Which is an example of renewable energy resource?
A. biomass
B. coal
C. gas
D. oil
A. biomass
Which statement best describes the relationship between CO levels and global temperature anomalies?
A. There is no clear relationship between the two variables
B. CO2 increases lead to temperature increases by approximately 100 years
C. Temperature and CO2 appear to increase together, especially after 1950
D. Temperature increases caused CO2 levels to rise
B. CO2 increases lead to temperature increases by approximately 100 years
Which of these determines the identity of an element?
A. number of electrons
B. number of protons
C. number of energy levels
D. number of neutrons
B. number of protons
(Double points)
Where is most of the freshwater on Earth located?
A. in the oceans
B. in polar ice and glaciers
C. in rivers, streams, and lakes
D. under the ground
B. in polar ice and glaciers
What is a possible effect of high nutrient levels in water systems?
A. algal bloom
B. fewer algae
C. healthier fish
D. hotter water
A. algal bloom
(triple points)
Many communities in the US use coal to produce electricity. One problem with using coal is that
A. mining coal causes damage to ecosystems
B. very little energy is produced in a coal burning power plant
C. there is very little coal available to use
D. coal creates harmful bacteria pollution in water, soil and air.
A. mining coal causes damage to ecosystems
Which would most affect the ability of hydroelectric power plants to supply energy to homes and businesses?
A. drought
B. high winds
C. absence of wind
D. high temperatures
A. drought
(double points)
The nucleus of an atom contains
A. only neutrons
B. protons and electrons
C. protons and neutrons
D. only electrons
C. protons and neutrons
How can the atmosphere be considered part of the hydrosphere?
A. It is a source of water.
B. It blocks ultraviolet rays from the sun.
C. It contains the oxygen necessary for life on Earth
D. It traps pollutants that would otherwise harm the Earth.
A. It is a source of water.
Which of the following are indicators of a healthy water source?
A. high nitrates, high pH, and low temperature
B. low temperatures, high dissolved oxygen and neutral pH
C. low pH, high nitrates, and low dissolved oxygen
D. high turbidity, high dissolved oxygen, and high temperature
B. low temperatures, high dissolved oxygen and neutral pH
8. Which TWO questions would help to differentiate renewable and nonrenewable resources?
Pick up to 2 answers.
A. Is the resource limited or endless?
B. Is the resource naturally available or made by humans?
C. Does the resource cause significant harm or no harm to the environment?
D. Can the resource be reused or recycled?
E. Does the resource require a large or small area for energy production?
A. Is the resource limited or endless? &
D. Can the resource be reused or recycled?
(triple points)
How does deforestation MOST LIKELY impact global temperatures?
A. Deforestation reduces carbon dioxide absorption, which leads to an increase in global temperatures.
B. Deforestation increases carbon dioxide absorption, which leads to an increase in global temperatures.
C. Deforestation reduces carbon dioxide absorption, which leads to a decrease in global temperatures.
D. Deforestation increases carbon dioxide absorption, which leads to a decrease in global temperatures.
A. Deforestation reduces carbon dioxide absorption, which leads to an increase in global temperatures.
Sodium is an element found in table salt. It contains 11 protons and 12 neutrons. How many electrons are found in a neutral atom of sodium?
A. 23
B. 12
C. 11
D. 1
C. 11
(double points)
Vertical movement in ocean water can cause horizontal movement, such as in ocean currents. One way vertical movement occurs is when dense water sinks.
Choose the correct statement that explains the relationship between the temperature, salinity, and density of water.
A. Lower temperature and higher salinity make the water more dense, causing it to sink.
B. Lower temperature and lower salinity make the water more dense, causing it to sink.
C. Higher temperatures and higher salinity make the water more dense, causing it to sink.
D. Higher temperatures and lower salinity make the water more dense, causing it to sink.
A. Lower temperature and higher salinity make the water more dense, causing it to sink.
(double points)
An algae bloom in a water system is most likely caused by
A. decrease in the fish population
B. high oxygen levels in the water
C. increase use of fossil fuels.
D. large amount of nitrates in water
D. large amount of nitrates in water
(double points)
Which would least likely have an impact on global climate changes?
A. producing energy using oil
B. producing energy using coal
C. producing energy using hydroelectric plants
D. producing energy using natural gas
C. producing energy using hydroelectric plants
Since the Industrial Revolution, the concentration of carbon dioxide in the atmosphere has increased significantly. Which of the following statements best explains this observation?
A. Increased volcanic activity has released large amounts of carbon dioxide
B. Deforestation has reduced the capacity of forests to absorb carbon dioxide.
C. Natural variations in Earth’s orbit have caused a warming trend.
D. Solar flares have emitted more radiation towards Earth.
B. Deforestation has reduced the capacity of forests to absorb carbon dioxide.
Which of these is not made up of two or more substances that are combined physically?
A. homogeneous mixture
B. compound
C. heterogeneous mixture
D. solution
B. compound
Which statement describes a key difference between the confined and unconfined aquifers?
A. Unconfined aquifers are always deeper than confined aquifers.
B. Confined aquifers are open to the surface and refill easily.
C. Unconfined aquifers are closer to the surface and recharge from rain.
D. Only confined aquifers can supply wells with water.
C. Unconfined aquifers are closer to the surface and recharge from rain.
What is the relationship between water temperature and dissolved oxygen?
A. As water temperature goes up, the amount of dissolved oxygen increases.
B. Water temperature has no effect on the amount of dissolved oxygen.
C. The amount of dissolved oxygen decreases as water temperature decreases.
D. Cold water can contain more dissolved oxygen than warm water can.
D. Cold water can contain more dissolved oxygen than warm water can
Hydroelectric dams, nuclear power plants, coal-fired plants, and solar panels are ways electricity can be produced.
Which method has the least ecological impact when producing electricity?
A. coal-fired plants
B. hydro-electric dams
C. nuclear power plants
D. solar panel
D. solar panel
The Tennessee Valley Authority has developed a system in which consumers can purchase blocks of power produced from renewable resources. Which would least likely be purchased by a consumer interested in renewable energy sources?
A. 16 photovoltaic systems to generate solar power
B. 70 coal-fired plants located across the state
C. 10,000 acres of mature trees in a forest
D. 2 hydroelectric dams and power plants
B. 70 coal-fired plants located across the state
(triple points)