ATI TEAS 7
physics
1. Which property of a wave determines its energy?
- A. Wavelength
- B. Amplitude
- C. Frequency
- D. Velocity
Correct answer: b
Rationale: Amplitude is directly related to the energy carried by a wave - higher amplitudes correspond to higher energy waves.
2. What is the name of the radioactive isotope commonly used in medical imaging techniques like PET scans?
- A. Uranium-235
- B. Plutonium-239
- C. Potassium-40
- D. Fluorine-18
Correct answer: D
Rationale: Fluorine-18 is the radioactive isotope commonly used in medical imaging techniques like PET scans. It is often used in the form of fluorodeoxyglucose (FDG) to detect areas of increased metabolic activity in the body, such as in cancer cells. Uranium-235 and Plutonium-239 are not typically used in medical imaging, and Potassium-40 is a naturally occurring radioactive isotope found in the human body but is not commonly used in medical imaging techniques.
3. In a horizontal chart, the lowest level worker is located at the
- A. Leftmost box
- B. Middle
- C. Rightmost box
- D. Bottom
Correct answer: B
Rationale: In a horizontal chart, the lowest level worker is typically positioned at the leftmost side, with higher-level workers placed to the right. This arrangement signifies hierarchy, with the top level usually being on the rightmost side. Therefore, the correct answer is B: 'Middle,' as the lowest level worker is situated towards the left of the chart, not the extreme left or right. This positioning helps visually represent the organization's structure and indicates the progression from lower to higher levels as one moves from left to right on the chart.
4. Which element is a good conductor of electricity but is not a metal?
- A. Copper
- B. Silver
- C. Graphite
- D. Gold
Correct answer: C
Rationale: While metals are known for their conductivity, some non-metals like graphite also exhibit this property due to their unique electronic structure
5. What is the primary hormone released by the parathyroid glands?
- A. Insulin
- B. Calcitonin
- C. Parathyroid hormone (PTH)
- D. Thyroxine
Correct answer: C
Rationale: The primary hormone released by the parathyroid glands is Parathyroid hormone (PTH), which plays a crucial role in regulating calcium levels in the body. Insulin is produced by the pancreas to regulate blood sugar levels and is unrelated to the parathyroid glands. Calcitonin is produced by the thyroid gland and helps regulate calcium levels but is not the primary hormone released by the parathyroid glands. Thyroxine is a hormone produced by the thyroid gland that regulates metabolism and is also not released by the parathyroid glands. Therefore, the correct answer is C: Parathyroid hormone (PTH).
6. Which sentence uses the possessive apostrophe correctly?
- A. The cats meows filled the room.
- B. I visited my friends' house.
- C. She borrowed Johns book.
- D. The childrens toys were scattered everywhere.
Correct answer: B
Rationale: Option b adds the apostrophe and "s" to show ownership of multiple friends.
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