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8th Grade EOG Review
Test Description: Review Questions for 8th Grade NC EOG
Instructions: Answer all questions to get your test result.
1) Health department officials are trying to identify the source of an outbreak of an intestinal virus. Which is the most likely source of the virus?
A
poor nutritional habits
B
polluted air
C
lack of exercise
D
contaminated water
2) Which best compares bacteria and viruses?
A
Bacteria cause disease, but viruses do not.
B
Bacteria are living organisms, but viruses are not.
C
Bacteria are smaller than viruses.
D
Bacteria have genetic material, but viruses do not.
3) Humans occasionally become infected with common colds and flu after flying on crowded airplanes. Which microscopic biological hazard is most likely responsible?
A
foodborne bacteria
B
airborne contagions
C
vectorborne parasites
D
environmental mutagens
4) Why are viruses considered to be nonliving organisms?
A
They do not have genetic information.
B
They are not able to move on their own.
C
They are not able to reproduce without a host cell.
D
They do not interact with their environment.
5) Which pair correctly matches a vector and the infectious disease it carries?
A
flea – Lyme disease
B
human – influenza
C
mosquito – malaria
D
opossum – rabies
6) A recreational lake experiences eutrophication because of excess nutrients. Based on this information, how would the recreational lake most likely appear?
A
clear and blue
B
orange and rustcolored
C
murky and full of algae
D
oily and greasy
7) Lyme disease is spread by ticks and people affected with Lyme disease often exhibit a rash and symptoms similar to the flu. Which is the cause of Lyme disease?
A
a bacterium
B
a virus
C
a toxin
D
a fungus
8) The bacteria that causes bubonic plague is transmitted to humans by fleas. Which term best describes the role of the fleas in transmitting bubonic plague?
A
pathogen
B
decomposer
C
parasite
D
vector
9) Which makes it possible for a person who has recovered from a cold to catch another cold?
A
A cold is a viral infection that remains active until treated with antibiotics.
B
A cold is a bacterial infection present only during the winter months.
C
A cold is a bacterial infection that remains active in the body.
D
A cold is a viral infection with many different strains.
10) Which aspect of fertilizer pollution would have the greatest negative impact on an aquatic ecosystem?
A
Nitrates poison the water that fish breathe through their gills.
B
Microorganisms in the water absorb all the oxygen, suffocating animals.
C
Aquatic animals increase, adding producers to the food chain and feeding fish.
D
Algal blooms deplete the oxygen and block the sunlight from penetrating a body of water.
11) When wood is burned, it is changed into ash and carbon is released into the atmosphere as smoke. If 2 kg of wood were burned, how much ash would result?
A
about 2 kg because some carbon escapes the system and some ash is added
B
less than 2 kg because some of the mass is lost as gas
C
exactly 2 kg because mass is conserved in this system
D
greater than 2 kg because carbon is added to the system
12) Which form of energy production creates the most air pollution?
A
nuclear
B
solar
C
hydroelectric
D
coal
13) Which is most likely a consequence of using wind farms for energy production?
A
air pollution
B
increased weathering and erosion
C
overuse of metal resources
D
disruption of bird migrations
14) Why are the noble gases such as helium (He) and neon (Ne) grouped together in the periodic table?
A
They are dangerous gases when combined with water.
B
They are highly reactive metallic solids.
C
They are nonreactive gases.
D
They are liquid at room temperature and have high boiling points.
15) In which group are the most reactive metals located?
A
Group 17 (VIIA)
B
Group 18 (VIIIA)
C
Group 2 (IIA)
D
Group 1 (IA)
16) Which is an anatomical similarity that indicates relatedness between two species?
A
the tail of a fish and the tail of a monkey
B
the wing of a butterfly and the wing of a bat
C
the arm of a human and the wing of a bird
D
the flipper of a dolphin and the fin of a shark
17) If significant amounts of fossil fuels continue to be used to support energy needs, what will be a negative impact for our planet?
A
decreased oxygen levels, leading to lower air quality
B
increased levels of carbon dioxide, leading to warmer global climates
C
decreased water quality, leading to increases in marine diversity
D
increased air pollution, leading to better human health
18) Which process starts the release of energy from food molecules for use in animals?
A
photosynthesis
B
ingestion
C
digestion
D
respiration
19) Which two elements are most likely ductile?
A
Zn and N
B
C and P
C
Si and Ne
D
Au and Ag
20) Which is the most exact method of determining the age of geologic features?
A
relative dating
B
comparing fossils to living organisms
C
absolute dating
D
analyzing ice cores
*select an answer for all questions
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