問題1
Studies of Moon rock show that much of the Moon is composed of basalt. Which of the following statements is the most reasonable conclusion based upon this information?
Studies of Moon rock show that much of the Moon is composed of basalt. Which of the following statements is the most reasonable conclusion based upon this information?
正確答案: D
問題2
In a suspension, the particles are larger and tend to settle out; in a solution, the particles are microscopic and do not settle out. Pure substances contain only one compound and are not mixtures.
Exhibit:
The contents in the container probably represent which of the following?
In a suspension, the particles are larger and tend to settle out; in a solution, the particles are microscopic and do not settle out. Pure substances contain only one compound and are not mixtures.
Exhibit:
The contents in the container probably represent which of the following?
正確答案: D
問題3
In the food web shown below, the arrows show the flow of energy through an ecosystem. Each arrow points from a given plant or animal to a second animal; the animal that the arrow points to would get its energy by eating the first plant or animal.
For example, the field mouse is a typical herbivore.
Which statement about herbivores is most accurate?
In the food web shown below, the arrows show the flow of energy through an ecosystem. Each arrow points from a given plant or animal to a second animal; the animal that the arrow points to would get its energy by eating the first plant or animal.
For example, the field mouse is a typical herbivore.
Which statement about herbivores is most accurate?
正確答案: A
問題4
The pH of a liquid is a measure of its acidity or its alkalinity. Even small changes in pH of human blood can cause very serious health problems.
Carbon dioxide (CO2), is one of the dissolved gases present in healthy blood. CO2 normally mixes with the water in blood to form a mild acid, carbonic acid, which lowers the blood pH.If a health problem causes the dissolved carbon dioxide to increase or decrease, the blood's pH would change and could produce an unhealthy pH level.
Based on this information, which statement best summarizes the blood condition that might result when an individual has a respiratory condition that causes the blood to contain too much CO2?
The pH of a liquid is a measure of its acidity or its alkalinity. Even small changes in pH of human blood can cause very serious health problems.
Carbon dioxide (CO2), is one of the dissolved gases present in healthy blood. CO2 normally mixes with the water in blood to form a mild acid, carbonic acid, which lowers the blood pH.If a health problem causes the dissolved carbon dioxide to increase or decrease, the blood's pH would change and could produce an unhealthy pH level.
Based on this information, which statement best summarizes the blood condition that might result when an individual has a respiratory condition that causes the blood to contain too much CO2?
正確答案: D
問題5
The battery of an automobile produces electricity from a chemical reaction. This electricity leaves the battery from a post called a terminal and is used in starting the engine. Sometimes a crusty deposit forms on the terminals, preventing the engine from starting. Simply cleaning off the deposit often restores the battery to operable condition.
Which effect does the deposit have on the battery terminals?
The battery of an automobile produces electricity from a chemical reaction. This electricity leaves the battery from a post called a terminal and is used in starting the engine. Sometimes a crusty deposit forms on the terminals, preventing the engine from starting. Simply cleaning off the deposit often restores the battery to operable condition.
Which effect does the deposit have on the battery terminals?
正確答案: A
問題6
Which of the following statements would explain why some objects feel more solid to the touch than others?
Which of the following statements would explain why some objects feel more solid to the touch than others?
正確答案: B
問題7
By taking careful measurements, scientists have determined that the universe is expanding over time. Individual components of the universe, such as galaxies, continue to travel
through space. This concept is sometimes represented by a balloon as shown below. Each dot on the balloon represents a part of the universe, such as a galaxy.
Based on the information and diagram, which statement best describes the way galaxies move through space over time?
By taking careful measurements, scientists have determined that the universe is expanding over time. Individual components of the universe, such as galaxies, continue to travel
through space. This concept is sometimes represented by a balloon as shown below. Each dot on the balloon represents a part of the universe, such as a galaxy.
Based on the information and diagram, which statement best describes the way galaxies move through space over time?
正確答案: D
問題8
A diagram of an airplane in flight is shown below. During flight, forces are produced on the wing by air flowing over the wing and causing certain air pressures to develop on its top and bottom surfaces. In the illustration below, all four forces are in balance.
Based on the information and diagram, which type of motion should be expected from the plane?
A diagram of an airplane in flight is shown below. During flight, forces are produced on the wing by air flowing over the wing and causing certain air pressures to develop on its top and bottom surfaces. In the illustration below, all four forces are in balance.
Based on the information and diagram, which type of motion should be expected from the plane?
正確答案: E
問題9
Cholera is a disease caused by a bacterium that is transmitted by water, shellfish, and raw vegetables. The major symptom is severe diarrhea. 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?
Cholera is a disease caused by a bacterium that is transmitted by water, shellfish, and raw vegetables. The major symptom is severe diarrhea. 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?
正確答案: B