ATI TEAS 7
Physics
1. What are the two main types of nuclear decay, and what differentiates them?
- A. Fission and fusion, based on the size of the nucleus
- B. Alpha and beta decay, based on the emitted particle.
- C. Spontaneous and induced decay, based on the trigger.
- D. Isotope decay and chain reactions, based on the stability of the nucleus.
Correct answer: B
Rationale: The two main types of nuclear decay are alpha and beta decay, based on the emitted particle. In alpha decay, an alpha particle (which consists of two protons and two neutrons) is emitted from the nucleus. In beta decay, a beta particle (either an electron or a positron) is emitted from the nucleus. These types of decay are differentiated by the particles they emit, rather than the size of the nucleus, trigger, or stability of the nucleus.
2. 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.
3. Which sentence uses the colon correctly?
- A. I brought snacks: chips, salsa, and guacamole.
- B. The winner is: Sarah!
- C. He loves all things chocolate: cake, ice cream, and candy bars.
- D. Please bring the following items: pen, paper, and stapler.
Correct answer: A
Rationale: Colons are used to introduce a list or explanation that follows an independent clause. Options (a) and (c) use the colon correctly.
4. There are times when Katherine evaluates her staff as she makes her daily rounds. Which of
- A. The staff member is observed in natural setting.
- B. Incidental confrontation and collaboration is allowed.
- C. The evaluation is focused on objective data systematically.
- D. The evaluation may provide valid information for compilation of a formal report.
Correct answer: A
Rationale: The correct answer is A: 'The staff member is observed in a natural setting.' This option is the most appropriate because it aligns with the concept of naturalistic observation, where behavior is observed in its natural environment without interference or manipulation. In this scenario, Katherine is observing her staff during her daily rounds without any alterations to their behavior or environment. This allows for a more authentic and unbiased assessment of their performance. Options B, C, and D are not as relevant to the concept of naturalistic observation and do not accurately describe the situation presented in the question.
5. Which of the following is an example of static friction?
- A. Sliding a heavy box across the floor
- B. A car moving around a curve
- C. Pushing a stationary object
- D. Braking a car to stop
Correct answer: c
Rationale: Static friction occurs when an object is at rest and prevents it from moving when a force is applied.
6. What is the process of copying DNA called?
- A. Transcription
- B. Translation
- C. Replication
- D. Mutation
Correct answer: C
Rationale: Rationale: A) Transcription is the process of creating an RNA copy of a segment of DNA. It involves the synthesis of mRNA from a DNA template. B) Translation is the process of synthesizing a protein from an mRNA template. It involves the conversion of the mRNA sequence into a sequence of amino acids. C) Replication is the process of copying DNA to produce an identical copy. During replication, the DNA double helix unwinds and each strand serves as a template for the synthesis of a new complementary strand, resulting in two identical DNA molecules. D) Mutation refers to a change in the DNA sequence that can result from errors during replication, exposure to mutagens, or other factors. While mutations can occur during replication, the process of copying DNA itself is called replication.
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