ATI TEAS 7
physics
1. 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.
2. The defining characteristic of an element is determined by the number of:
- A. Neutrons in its nucleus
- B. Electrons surrounding the nucleus
- C. Protons in its nucleus
- D. All of the above
Correct answer: C
Rationale: The correct answer is C: 'Protons in its nucleus.' An element is defined by the number of protons in its nucleus, known as the atomic number. This number determines the element's identity and its placement on the periodic table. Neutrons and electrons play important roles in an atom, but they do not define the element itself. Neutrons contribute to the atom's mass, while electrons are involved in chemical reactions and bonding. Therefore, the number of protons is the defining characteristic of an element.
3. Rectangle: A picture frame measures 15cm by 20cm. What is its perimeter?
- A. 30cm
- B. 55cm
- C. 65cm
- D. 75cm
Correct answer: C
Rationale: Add the lengths of all sides: perimeter = 2 (length + width) = 2 (15cm + 20cm) = 65cm.
4. What type of clause is "as the sun dipped below the horizon" in the sentence "We sat on the beach, as the sun dipped below the horizon"?
- A. Independent clause
- B. Subordinate clause
- C. Appositive clause
- D. Noun clause
Correct answer: B
Rationale: The clause "as the sun dipped below the horizon" provides additional information about the main clause "We sat on the beach," making it a subordinate clause.
5. A ball is thrown upwards. Which of the following statements is TRUE about its potential energy and kinetic energy at the peak of its trajectory?
- A. Both potential and kinetic energy are zero.
- B. Potential energy is maximum and kinetic energy is minimum.
- C. Potential energy is minimum and kinetic energy is maximum.
- D. Both potential and kinetic energy remain constant.
Correct answer: B
Rationale: At the peak, the ball momentarily stops moving, minimizing kinetic energy. However, it's still at its highest point, maximizing its potential energy due to gravity.
6. Which of the following is a condition characterized by a loss of bone density and increased risk of fractures?
- A. Osteoarthritis
- B. Rickets
- C. Osteoporosis
- D. Scoliosis
Correct answer: C
Rationale: The correct answer is C: Osteoporosis. Osteoporosis is a condition characterized by a loss of bone density, which leads to weakened bones and an increased risk of fractures. Osteoarthritis (A) is a degenerative joint disease, not a bone density issue. Rickets (B) is a disorder caused by a deficiency of vitamin D, leading to soft and weak bones, mainly seen in children. Scoliosis (D) is a condition characterized by an abnormal curvature of the spine, not directly related to bone density loss. Understanding the differences between these conditions is important for diagnosing and treating patients accurately.
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