Answer the following question given this paragraph: Friction is the force that opposes motion between any surfaces that are in contact. There are four types of friction: static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces. Fluid friction occurs in liquids and gases. All four types of friction are described below. You can see a video demonstration of the different types at this URL:. Q: What 3 types of friction occur between solid surfaces? Choices: - static , arching , rolling - static,desending,sliding - static , ascending , rolling - static, sliding, rolling A:
static, sliding, rolling
Answer the following question given this paragraph: Alkali metals are all solids at room temperature. Q: What form do alkali metals take at room temperature? Choices: - liquid - gas - compound - solid A:
solid
Q: Answer the following question given this paragraph: The epidermis is the outermost layer of the skin. It forms the waterproof, protective wrap over the body's surface. Although the top layer of epidermis is only about as thick as a sheet of paper, it is made up of 25 to 30 layers of cells. The epidermis also contains cells that produce melanin. Melanin is the brownish pigment that gives skin and hair their color. Melanin-producing cells are found in the bottom layer of the epidermis. The epidermis does not have any blood vessels. The lower part of the epidermis receives blood by diffusion from blood vessels of the dermis. Q: What is the outermost layer of the skin? Choices: - dermis - nexus - callus - epidermis A:
A: epidermis
Question: Answer the following question given this paragraph: Blood from the body enters the right atrium of the heart. The right atrium pumps the blood to the right ventricle, which pumps it to the lungs. Q: Which area of the human heart pumps the blood to the right ventricle? Choices: - left atrium - true atrium - left ventricle - right atrium A:
Answer: right atrium
*Question*
Answer the following question given this paragraph: Some compounds form rigid frameworks called crystals. Other compounds form individual molecules. A molecule is the smallest particle of a compound that still has the compound's properties. Q: Some compounds form rigid frameworks called what? Choices: - grids - ions - chemicals - crystals A:
**Answer**
crystals
Answer the following question given this paragraph: A lipid is an organic compound such as fat or oil. Organisms use lipids to store energy, but lipids have other important roles as well. Lipids consist of repeating units called fatty acids. Fatty acids are organic compounds that have the general formula CH 3 (CH 2 ) n COOH, where n usually ranges from 2 to 28 and is always an even number. There are two types of fatty acids: saturated fatty acids and unsaturated fatty acids. Q: What do organisms use to store energy? Choices: - tissues - proteins - metabolytes - lipids A:
lipids