Answer the following question given this paragraph: Generators may be set up to produce either direct or alternating current. Generators in cars and most power plants produce alternating current. Regardless of the type of current, all generators change kinetic energy to electrical energy. Q: When using a generator, we are transforming what energy into what energy? Choices: - magnetic into kinetic - thermal into radioactive - mechanical into thermal - kinetic into electrical A:
kinetic into electrical
(Question)
Answer the following question given this paragraph: With the help of muscles, joints allow the body to move with relatively little force. Q: Along with muscles, what helps the body move with relatively little force? Choices: - glands - limbs - nerves - joints A:
(Answer)
joints
Ques: Answer the following question given this paragraph: The thyroid gland is a relatively large gland in the neck. Hormones secreted by the thyroid gland include thyroxin. Thyroxin increases the rate of metabolism in cells throughout the body. Q: What is the name of the relatively large gland in the neck that secretes thyroxin? Choices: - Pancreas - Thyroid - Pituitary - thyroid A:
Ans: thyroid
(Q).
Answer the following question given this paragraph: Radio telescopes collect radio waves and are sometimes used in large arrays. Q: What does an array of radio telescopes collect? Choices: - thermal waves - light waves - microwaves - radio waves A:
(A).
radio waves
Ques:Answer the following question given this paragraph: When fossil fuels burn, they release thermal energy, water vapor, and carbon dioxide. Carbon dioxide produced by fossil fuel use is a major cause of global warming. The burning of fossil fuels also releases many pollutants into the air. Pollutants such as sulfur dioxide form acid rain, which kills living things and damages metals, stonework, and other materials. Pollutants such as nitrogen oxides cause smog, which is harmful to human health. Tiny particles, or particulates, released when fossil fuels burn also harm human health. Natural gas releases the least pollution; coal releases the most (see Figure below ). Petroleum has the additional risk of oil spills, which may seriously damage ecosystems. Q: What gas produced by fossil fuel use is a major cause of global warming? Choices: - helium - hydrogen - phosphorous - carbon dioxide A:

Ans:carbon dioxide
Ques:Answer the following question given this paragraph: Tadpoles go through many changes to become adult frogs. Q: What do tadpoles change into? Choices: - reptiles - toads - mud puppies - adult frogs A:

Ans:
adult frogs