Answer the following question given this paragraph: The frequency , , is the number of cycles an object goes through in 1 second. Frequency is measured in Hertz (Hz). 1 Hz = 1 cycle per sec. Q: What is the base unit that frequency is typically measured in? Choices: - watt - volume - degrees - hertz A:
hertz
Answer the following question given this paragraph: As larvae, tunicates can swim freely to find food. As adults, tunicates lack a post-anal tail and notochord, and they can no longer swim. Instead, they remain in one place and are filter feeders. Tunicates can reproduce both sexually and asexually. The same adults produce sperm and eggs. However, fertilization always involves gametes from different parents. Asexual reproduction is by budding. Q: Budding is a form of what type of reproduction in tunicates? Choices: - sexual - nuclear - microscopic - asexual A:
asexual
Q: Answer the following question given this paragraph: Many common electric devices contain electromagnets. Some examples include hair dryers, fans, CD players, telephones, and doorbells. Most electric devices that have moving parts contain electric motors. You can read below how doorbells and electric motors use electromagnets. Q: What type of motor is used in most household devices with moving parts? Choices: - cooling motors - vacuum motors - thermal motors - electric motors A:
A: electric motors
Question: Answer the following question given this paragraph: Air quality is a measure of the pollutants in air. Poor air quality started to become a serious problem during the Industrial Revolution. After 1900, motor vehicles added greatly to the problem. The Clean Air Act of 1970 improved the quality of the air over the U. S. Q: Air quality is a measure of what in the air? Choices: - nitrogen - precipitation - oxygen - pollutants A:
Answer: pollutants
*Question*
Answer the following question given this paragraph: The somatic nervous system also controls some unconscious movements, called reflexes. A reflex is a very rapid motor response that is not directed by the brain. In a reflex, nerve impulses travel to and from the spinal cord in a reflex arc , like the one in Figure below . In this example, the person jerks his hand away from the flame without any conscious thought. It happens unconsciously because the nerve impulses bypass the brain. Q: What is the term for the unconscious movements controlled by the somatic nervous system? Choices: - senses - mechanisms - tremors - reflexes A:
**Answer**
reflexes
Q: Answer the following question given this paragraph: Erosion moves the pieces of broken rock. Q: What does erosion do to pieces of broken rock? Choices: - lead them - Smooth them - Cancel Them - moves them A:
A: moves them