ATI TEAS 7
physics
1. What happens to the gravitational potential energy of an object as it falls freely?
- A. It decreases
- B. It increases
- C. It remains constant
- D. It becomes zero
Correct answer: a
Rationale: Gravitational potential energy decreases as an object falls freely due to a decrease in its height.
2. A study finds a link between increased screen time and lower academic performance. What additional information would be most helpful in interpreting this finding?
- A. The average socioeconomic status of the study participants.
- B. The specific types of screen activities participants engaged in.
- C. Whether the students had access to healthy meals and snacks.
- D. The participants' ages and grade levels.
Correct answer: B
Rationale: Knowing the specific types of screen activities participants engaged in would provide crucial context for interpreting the link between increased screen time and lower academic performance. For example, if the majority of screen time was spent on educational apps or programs, the impact on academic performance may differ compared to if the screen time was mostly spent on social media or gaming. Understanding the nature of screen activities can help determine the potential mechanisms behind the observed relationship.
3. Which word best synonyms with the word "elated"?
- A. Angry
- B. Sad
- C. Excited
- D. Confused
Correct answer: C
Rationale: "Elated" and "excited" both convey feelings of happiness and enthusiasm.
4. What is the term for the time it takes for a wave to complete one full cycle?
- A. Frequency
- B. Amplitude
- C. Period
- D. Wavelength
Correct answer: c
Rationale: The period of a wave is the time taken for one complete oscillation or cycle.
5. When magnesium metal reacts with hydrochloric acid, hydrogen gas is produced. What evidence suggests a chemical reaction is occurring?
- A. A change in color
- B. The formation of a gas
- C. Dissolving in a liquid
- D. No change in temperature
Correct answer: B
Rationale: The correct answer is B: 'The formation of a gas.' When magnesium metal reacts with hydrochloric acid, hydrogen gas is produced as one of the products. The formation of a gas is a clear indicator of a chemical reaction taking place. This is known as a gas evolution reaction, where a gas is produced as a result of a chemical reaction. The other options do not specifically indicate a chemical reaction. A change in color or dissolving in a liquid could occur in physical changes as well, and no change in temperature does not necessarily rule out a chemical reaction as some reactions are endothermic or exothermic.
6. What is the best way to punctuate the dialogue "Are you coming?" she asked. "Maybe," I replied.
- A. "Are you coming?" she asked? "Maybe," I replied.
- B. "Are you coming?" she asked. "Maybe," I replied.
- C. "Are you coming?" she asked, "Maybe," I replied.
- D. "Are you coming?" she asked, "Maybe," I replied.
Correct answer: B
Rationale: Each speaker's words need quotation marks, and the question mark should go inside the closing quotation mark of the question.
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