GED Science Exam
Question: 1
The following symbols represent a shortcut for representing an element. For example, O stands for
oxygen, H for hydrogen, and C for carbon. H2O is the formula for water. The subscript 2 in the formula
indicates that there are two atoms of hydrogen in a water molecule. If there is no subscript after a
symbol, the subscript is assumed to be one. Therefore, one molecule of water contains three atoms:
two hydrogen atoms and one oxygen atom.
Based on the information, how many atoms are represented in C12H22O11?
A. 3
B. 11
C. 12
D. 22
E. 45
Answer: E
Question: 2
Cholera is a disease caused by a bacterium that is transmitted by water, shellfish, and raw
vegetables. The major symptom is severe diarrhe
a. Epidemics of cholera in the Americas, common in
the 19th century, are much less frequent now with the advent of modern medicine and improved
methods of hygiene.
However, in 1991, the number of cholera epidemics increased again in one South American country,
causing over 4000 deaths.
The high number of cases of cholera in the South American country noted above was most probably
due to which factor?
A. prolonged smoking of cigarettes
B. lack of variety in foods
C. poor water and sewage treatment
D. eating the wrong kinds of foods
E. widespread overuse of antibiotics
Answer: C
Question: 3
Making products from recycled materials, such as aluminum cans, glass, and plastic usually
saves energy and other resources. For example, it takes about 75% less energy to make steel from
scrap than from ore. All forms of recycling involve some energy to produce the recycled materials, a
process that also results in the production of some pollution.
, The chart at the left shows the energy savings from recycling.
When Anil is at the grocery store, he can choose to buy juice in a glass bottle, an aluminum can, a
plastic jug, a juice box (paper), or foil-covered juice container.
If Anil's community requires that he recycles, which container would provide the MOST overall
energy savings?
A. aluminum can
B. plastic jug
C. waxy, cardboard juice box
D. glass bottle
E. foil-covered container
Answer: A
Question: 4
The greenhouse effect explains why a car's interior can get hot on a sunny day even if it is cool
outside. The glass windows allow the Sun's rays to pass through to the interior but
prevent heat rays from escaping to the outside. Certain gases, such as carbon dioxide and nitrous
oxide, act like the glass in a greenhouse when they are present in the atmosphere.
Both natural and human activities lead to the release of gases that contribute to the greenhouse
effect. During recent summers, forest fires have contributed to the loss of millions of acres of forest.
These fires have resulted in the release of smoke and ash as well as greenhouse gases.
Based on the information, which statement most likely predicts the result of ongoing widespread
forest fires?
A. Forest fires are unlikely to affect atmospheric temperature.
B. Forest fires decrease the amount of atmospheric greenhouse gases.
C. Greenhouse gases could help form new animal species.
D. There could be a gradual increase in average atmospheric temperatures.
E. There could be a gradual decrease in average atmospheric temperatures.
Answer: D
Question: 5
Question: 1
The following symbols represent a shortcut for representing an element. For example, O stands for
oxygen, H for hydrogen, and C for carbon. H2O is the formula for water. The subscript 2 in the formula
indicates that there are two atoms of hydrogen in a water molecule. If there is no subscript after a
symbol, the subscript is assumed to be one. Therefore, one molecule of water contains three atoms:
two hydrogen atoms and one oxygen atom.
Based on the information, how many atoms are represented in C12H22O11?
A. 3
B. 11
C. 12
D. 22
E. 45
Answer: E
Question: 2
Cholera is a disease caused by a bacterium that is transmitted by water, shellfish, and raw
vegetables. The major symptom is severe diarrhe
a. Epidemics of cholera in the Americas, common in
the 19th century, are much less frequent now with the advent of modern medicine and improved
methods of hygiene.
However, in 1991, the number of cholera epidemics increased again in one South American country,
causing over 4000 deaths.
The high number of cases of cholera in the South American country noted above was most probably
due to which factor?
A. prolonged smoking of cigarettes
B. lack of variety in foods
C. poor water and sewage treatment
D. eating the wrong kinds of foods
E. widespread overuse of antibiotics
Answer: C
Question: 3
Making products from recycled materials, such as aluminum cans, glass, and plastic usually
saves energy and other resources. For example, it takes about 75% less energy to make steel from
scrap than from ore. All forms of recycling involve some energy to produce the recycled materials, a
process that also results in the production of some pollution.
, The chart at the left shows the energy savings from recycling.
When Anil is at the grocery store, he can choose to buy juice in a glass bottle, an aluminum can, a
plastic jug, a juice box (paper), or foil-covered juice container.
If Anil's community requires that he recycles, which container would provide the MOST overall
energy savings?
A. aluminum can
B. plastic jug
C. waxy, cardboard juice box
D. glass bottle
E. foil-covered container
Answer: A
Question: 4
The greenhouse effect explains why a car's interior can get hot on a sunny day even if it is cool
outside. The glass windows allow the Sun's rays to pass through to the interior but
prevent heat rays from escaping to the outside. Certain gases, such as carbon dioxide and nitrous
oxide, act like the glass in a greenhouse when they are present in the atmosphere.
Both natural and human activities lead to the release of gases that contribute to the greenhouse
effect. During recent summers, forest fires have contributed to the loss of millions of acres of forest.
These fires have resulted in the release of smoke and ash as well as greenhouse gases.
Based on the information, which statement most likely predicts the result of ongoing widespread
forest fires?
A. Forest fires are unlikely to affect atmospheric temperature.
B. Forest fires decrease the amount of atmospheric greenhouse gases.
C. Greenhouse gases could help form new animal species.
D. There could be a gradual increase in average atmospheric temperatures.
E. There could be a gradual decrease in average atmospheric temperatures.
Answer: D
Question: 5
