Answer the following question given this paragraph: Potential energy is present in objects that are ______________. Q: Potential energy is present in objects that are what? Choices: - crystals - rigid - unstable - elastic A:
elastic
Answer the following question given this paragraph: An ionic bond is the force of attraction that holds together oppositely charged ions. It forms when atoms of a metal transfer electrons to atoms of a nonmetal. When this happens, the atoms become oppositely charged ions. Q: What bond is the force of attraction that holds together oppositely charged ions? Choices: - magnetic - iconic - harmonic - ionic A:
ionic
Q: Answer the following question given this paragraph: Figure 26.30 Spherical aberration is caused by rays focusing at different distances from the lens. Q: What is it called when rays focus at different distances from the lens? Choices: - constant aberration - carbon aberration - angular aberration - spherical aberration A:
A: spherical aberration
Question: Answer the following question given this paragraph: Point masses are structureless particles that cannot spin. Q: What type of masses are structureless particles that cannot spin? Choices: - weightless masses - turning masses - inertial mass - point masses A:
Answer: point masses
*Question*
Answer the following question given this paragraph: The nervous system isn't the only message-relaying system of the human body. The endocrine system also carries messages. The endocrine system is a system of glands that release chemical messenger molecules into the bloodstream. The messenger molecules are hormones. Hormones act slowly compared with the rapid transmission of electrical messages by the nervous system. They must travel through the bloodstream to the cells they affect, and this takes time. On the other hand, because endocrine hormones are released into the bloodstream, they travel throughout the body. As a result, endocrine hormones can affect many cells and have body-wide effects. Q: What do you call the system of glands that release chemical messenger molecules into the bloodstream? Choices: - homeostasis system - nervous system - limbic system - endocrine system A:
**Answer**
endocrine system
Answer the following question given this paragraph: Primary Batteries Primary batteries are single-use batteries because they cannot be recharged. A common primary battery is the dry cell (Figure 17.10). The dry cell is a zinc-carbon battery. The zinc can serves as both a container and the negative electrode. The positive electrode is a rod made of carbon that is surrounded by a paste of manganese(IV) oxide, zinc chloride, ammonium chloride, carbon powder, and a small amount of water. The reaction at the anode can be represented as the ordinary oxidation of zinc: Zn(s) Zn 2+(aq) + 2e . Q: Primary batteries are single-use batteries because they cannot be what? Choices: - UP ticked. - refreshed - plugged - recharged A:
recharged