Answer the following question given this paragraph: A : A theory is needed to explain gravity. In science, a theory is a broad explanation that is supported by a great deal of evidence. Q: What is another name for a broad explanation that is supported by a great deal of evidence? Choices: - hypothesis - concept - conjecture - theory A:
theory
(Question)
Answer the following question given this paragraph: The pineal gland is a tiny gland located at the base of the brain. It secretes the hormone melatonin. This hormone controls sleep-wake cycles and several other processes. Q: What gland is located at the base of the brain and secretes the hormone melatonin? Choices: - thymus - pituitary - thyroid - pineal A:
(Answer)
pineal
Ques: Answer the following question given this paragraph: Compounds form when atoms of different elements combine. This process is a chemical reaction. Q: In which type of reaction are compounds formed? Choices: - gaseous reaction - acid reaction - balanced reaction - chemical reaction A:
Ans: chemical reaction
(Q).
Answer the following question given this paragraph: Ion drives have low thrust but high efficiency. They have already been used on several space missions, including NASA's Deep Space 1spacecraft and Japan'sHayabusa asteroid sampling probe. Source: Photo courtesy of NASA,http://commons. wikimedia. org/wiki/File:Ion_Engine_Test_Firing_-_GPN2000-000482. Q: Ion drives have low thrust but high what? Choices: - power - acceleration - tolerance - efficiency A:
(A).
efficiency
Ques:Answer the following question given this paragraph: The urinary bladder is a hollow and muscular organ. It is shaped a little like a balloon. It is the organ that collects urine. Q: What is the hollow and muscular balloon-shaped organ that collects urine? Choices: - prostate - urethra - kidney - urinary bladder A:

Ans:urinary bladder
Answer the following question given this paragraph: The combined magnetic force of the magnetized wire coil and iron bar makes an electromagnet very strong. Q: The combined magnetic force of the magnetized wire coil and iron bar makes an electromagnet what? Choices: - very reduced - Very light - very heavy - very strong A:
very strong