ATI TEAS 7
Physics
1. What happens to the density of a gas when its temperature increases at constant pressure?
- A. It increases.
- B. It decreases.
- C. It remains the same.
- D. Information insufficient
Correct answer: B
Rationale: As gas particles gain thermal energy with increasing temperature, they spread out, decreasing the density.
2. What is the relationship between work and kinetic energy?
- A. Work is the cause of kinetic energy
- B. Kinetic energy is the cause of work
- C. Work and kinetic energy are the same
- D. Work and kinetic energy are unrelated
Correct answer: a
Rationale: Work done on an object can change its kinetic energy, either increasing or decreasing it.
3. What are enzymes?
- A. Building blocks of muscle
- B. Biological catalysts
- C. Energy source
- D. Antibodies
Correct answer: B
Rationale: Enzymes are proteins that speed up chemical reactions in our cells. They act like tiny factories, fitting specific molecules (substrates) into their active site to facilitate reactions.
4. How does an increase in mass affect the force required to produce the same acceleration on an object?
- A. Increases force required
- B. Decreases force required
- C. Has no effect on force required
- D. Causes unpredictable changes in force required
Correct answer: a
Rationale: With an increase in mass, more force is needed to produce the same acceleration due to inertia.
5. The professor explained the concept clearly. What is the past participle of the verb "explain"?
- A. explains
- B. explaining
- C. explained
- D. explanation
Correct answer: C
Rationale: The past participle is used to form verb tenses and passive voice constructions.
6. A children's toy consists of a half cylinder (diameter 10cm, height 8cm) attached to a cube with side lengths of 5cm. What is the total volume of the toy?
- A. 125 cu cm
- B. 200 cu cm
- C. 275 cu cm
- D. 350 cu cm
Correct answer: C
Rationale: Calculate the volume of the half cylinder and the cube separately, then add them up.
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