Q: Q: Wind power, solar power, hydropower, and geothermal power are called renewable sources of energy or what other term? Read this paragraph and choose the correct option from the provided answers: Alternative energy sources include wind power, solar power, hydropower, and geothermal power. Choices: - mandatory energy - specific energy - conservative energy - alternative energy A:
A: alternative energy

Q: Q: Light with the shortest wavelength appears as what color? Read this paragraph and choose the correct option from the provided answers: The wavelength of visible light determines the color that the light appears. Light with the longest wavelength appears red, and light with the shortest wavelength appears violet. In between are the wavelengths of all the other colors of light. Choices: - red - green - blue - violet A:
A: violet

Q: Q: Diamond is extremely hard because of the strong bonding between ______ in all directions? Read this paragraph and choose the correct option from the provided answers: Figure 10.43 Diamond is extremely hard because of the strong bonding between carbon atoms in all directions. Graphite (in pencil lead) rubs off onto paper due to the weak attractions between the carbon layers. An image of a graphite surface shows the distance between the centers of adjacent carbon atoms. (credit left photo: modification of work by Steve Jurvetson; credit middle photo: modification of work by United States Geological Survey) You may be less familiar with a recently discovered form of carbon: graphene. Graphene was first isolated in 2004 by using tape to peel off thinner and thinner layers from graphite. It is essentially a single sheet (one atom thick) of graphite. Graphene, illustrated in Figure 10.44, is not only strong and lightweight, but it is also an excellent conductor of electricity and heat. These properties may prove very useful in a wide range of applications, such as vastly improved computer chips and circuits, better batteries and solar cells, and stronger and lighter structural materials. The 2010 Nobel Prize in Physics was awarded to Andre Geim and Konstantin Novoselov for their pioneering work with graphene. Choices: - consistent atoms - hydrogen atoms - liquid atoms - carbon atoms A:
A: carbon atoms

Q: Q: What is one trait that the sponge and tarantula share? Read this paragraph and choose the correct option from the provided answers: One trait the sponge and tarantula share is lack of a backbone. In fact, they don't have any bones at all. These are defining traits of all invertebrates. Some invertebrates have a skeleton, but it isn't made of bone. Many other traits of invertebrates show considerable diversity. Choices: - lack of ogranic - lack of a emerge - lack of a cycle - lack of a backbone A:
A: lack of a backbone