Q: Moving electrons have a form of kinetic energy called what? Read this paragraph and choose the correct option from the provided answers: Electrons are negatively charged particles in atoms. Moving electrons have a form of kinetic energy called electrical energy . If you've ever experienced an electric outage, then you know how hard it is to get by without electrical energy. Most of the electrical energy we use is produced by power plants and arrives in our homes through wires. Two other sources of electrical energy are pictured in Figure below . Choices: - potential energy - electromagnetism - deformed energy - electrical energy A:
electrical energy

(Question)
Q: Which two basic parts of a plant develop tough outer coatings to protect the plant from the environment? Read this paragraph and choose the correct option from the provided answers: Choices: - roots and leaves - stems and stalks - bark and stems - leaves and stems A:
(Answer)
leaves and stems

Ques: Q: Because force and electric field are what, they have direction as well as their value? Read this paragraph and choose the correct option from the provided answers: Force and electric field are vectors and thus have direction as well as their value. Choices: - sensors - neurons - mass - vectors A:
Ans: vectors

(Q).
Q: The number of valence electrons determines variation of what property in nonmetals? Read this paragraph and choose the correct option from the provided answers: Reactivity is how likely an element is to react chemically with other elements. Some nonmetals are extremely reactive, whereas others are completely nonreactive. What explains this variation in nonmetals? The answer is their number of valence electrons. These are the electrons in the outer energy level of an atom that are involved in interactions with other atoms. Let's look at two examples of nonmetals, fluorine and neon. Simple atomic models of these two elements are shown in the Figure below . Choices: - permeability - density - turbidity - reactivity A:
(A).
reactivity

Ques:Q: What term describes a wave in which particles of the medium vibrate at right angles, or perpendicular, to the direction that the wave travels? Read this paragraph and choose the correct option from the provided answers: A transverse wave is a wave in which particles of the medium vibrate at right angles, or perpendicular, to the direction that the wave travels. Another example of a transverse wave is the wave that passes through a rope with you shake one end of the rope up and down, as in the Figure below . The direction of the wave is down the length of the rope away from the hand. The rope itself moves up and down as the wave passes through it. You can watch a video of a transverse wave in a rope at this URL: http://www. youtube. com/watch?v=TZIr9mpERbU . Choices: - drainage wave - symmetrical wave - stimulation wave - transverse wave A:

Ans:transverse wave

Ques:Q: Why are the stems of many xerophytes fleshy? Read this paragraph and choose the correct option from the provided answers: Choices: - drains water - pressures water - collects water - stores water A:

Ans:
stores water