Q: Claw ends of hammers and flagpole pulleys are examples of simple machines that reverse what? Read this paragraph and choose the correct option from the provided answers: Some machines change the direction of the force applied by the user. They may or may not also change the strength of the force or the distance over which the force is applied. Two examples of machines that work this way are the claw ends of hammers and flagpole pulleys. You can see in the Figure below how each of these machines works. In both cases, the direction of the force applied by the user is reversed by the machine. Choices: - direction of power - direction of work - direction of friction - direction of force A:
direction of force

Q: What device is a magnetic disc that provides long-term storage for programs and data? Read this paragraph and choose the correct option from the provided answers: The hard drive is a magnetic disc that provides long-term storage for programs and data. Choices: - software - cassette - floppy drive - hard drive A:
hard drive

Q: Q: What is the unsorted pile of material dropped by glaciers called? Read this paragraph and choose the correct option from the provided answers: Choices: - icy deposit - glacial runoff - landfill - glacial till A:
A: glacial till

Question: Q: Which hormones work together to control the level of glucose in the blood? Read this paragraph and choose the correct option from the provided answers: The pancreas is located near the stomach. Its hormones include insulin and glucagon. These two hormones work together to control the level of glucose in the blood. Insulin causes excess blood glucose to be taken up by the liver, which stores the glucose as glycogen. Glucagon stimulates the liver to break down glycogen into glucose and release it back into the blood. The pancreas also secretes digestive enzymes into the digestive tract. Choices: - insulin and estrogen - serotonin and glucagon - testosterone and insulin - insulin and glucagon A:
Answer: insulin and glucagon

*Question*
Q: Where part of the atmosphere is the uppermost mantle? Read this paragraph and choose the correct option from the provided answers: The lithosphere is the brittle crust and uppermost mantle. Choices: - troposphere - thermosphere - isosphere - lithosphere A:
**Answer**
lithosphere

(Q).
Q: During a what type of reaction do chemical changes take place? Read this paragraph and choose the correct option from the provided answers: A: During a chemical reaction, chemical changes take place. Some chemical bonds break and new chemical bonds form. Choices: - toxic - biological - nuclear - chemical A:
(A).
chemical