ATI TEAS 7
Biology
1. What is the main function of estuaries?
- A. Filtering pollutants from water
- B. Providing habitat for marine life
- C. Storing carbon dioxide
- D. Generating wind power
Correct answer: B
Rationale: Rationale: Estuaries are coastal areas where freshwater from rivers and streams mixes with saltwater from the ocean. They serve as important habitats for a variety of marine life, including fish, birds, and other wildlife. Estuaries provide shelter, breeding grounds, and food sources for many species, making them crucial for the overall health of marine ecosystems. While estuaries can help filter pollutants to some extent, their primary function is to support and sustain diverse populations of plants and animals. Storing carbon dioxide and generating wind power are not main functions of estuaries.
2. What is the most effective way to ensure clarity and conciseness in your writing?
- A. Using complex sentence structures and passive voice.
- B. Avoiding unnecessary repetition and redundant words.
- C. Replacing simple words with more sophisticated synonyms.
- D. Adding flowery introductions and lengthy conclusions.
Correct answer: B
Rationale: Concise writing eliminates unnecessary words and uses active voice to express ideas directly and clearly.
3. What is the difference between heat and temperature?
- A. They are the same thing.
- B. Heat is a form of energy, while temperature measures the average kinetic energy of particles.
- C. Heat flows from cold to hot, while temperature flows from hot to cold.
- D. Heat is measured in Celsius, while temperature is measured in Joules.
Correct answer: B
Rationale: Heat is a form of energy transfer, while temperature reflects the average kinetic energy of particles within a substance.
4. Which property of a substance refers to the force exerted on an object due to gravity?
- A. Mass
- B. Weight
- C. Density
- D. Volume
Correct answer:
Rationale: Weight is the measure of the force exerted on an object due to gravity. It is calculated as mass multiplied by the acceleration due to gravity.
5. What happens to the density of a substance if its mass increases while its volume remains constant?
- A. Density increases
- B. Density decreases
- C. Density remains constant
- D. Density becomes zero
Correct answer: a
Rationale: Density is the ratio of mass to volume. If the mass increases while the volume remains constant, the density will increase as there is more mass in the same volume.
6. In nuclear transmutation, a target nucleus is bombarded with a particle to create:
- A. A heavier isotope of the same element
- B. A lighter isotope of the same element
- C. An entirely new element
- D. A chain reaction of nuclear fission
Correct answer: C
Rationale: In nuclear transmutation, a target nucleus is bombarded with a particle to create an entirely new element. During this process, the target nucleus absorbs the incoming particle, resulting in changes to its atomic number and sometimes its mass number. These changes can lead to the creation of a different element altogether. This is a fundamental concept in nuclear chemistry and is used in various applications, including the creation of new isotopes for research or medical purposes. Options A and B are incorrect because transmutation involves creating a different element, not just a heavier or lighter isotope of the same element. Option D, a chain reaction of nuclear fission, is also incorrect as it refers to a different process where a nucleus splits into smaller fragments, releasing energy and more neutrons to sustain the chain reaction.
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