Answer the following question given this paragraph: Snow falls when water vapor condenses as ice crystals. The air temperature is below freezing all the way to the ground, so the ice crystals remain frozen. They fall as flakes. Sleet forms when snow melts as it falls through a layer of warm air and then refreezes. It turns into small, clear ice pellets as it passes through a cold layer near the ground. Freezing rain falls as liquid water. It freezes on contact with cold surfaces near the ground. It may cover everything with a glaze of ice. If the ice is thick, its weight may break tree branches and pull down power lines. Hail is another type of frozen precipitation. Hail forms in thunderstorms when strong updrafts carry rain high into the troposphere. The rain freezes into balls of ice called hailstones. This may happen over and over again until the hailstones are as big as baseballs. Hail forms only in cumulonimbus clouds. Q: What are two types of frozen percipitation? A:

OPTIONS:
- icycles and icebergs
- rain and hail
- ice and frost
- snow and hail

Answer: snow and hail

Problem: OPTIONS:
- nucleus
- electron shell
- atomic orbit
- bond axis
Q: Answer the following question given this paragraph: Q: Single bonds allow the atoms they join to rotate freely about the what? A:
Answer: bond axis

Problem:OPTIONS:
- radiation detector
- electromagnetic
- barometer
- accelerator

Answer the following question given this paragraph: Early Accelerators An early accelerator is a relatively simple, large-scale version of the electron gun. The Van de Graaff (named after the Dutch physicist), which you have likely seen in physics demonstrations, is a small version of the ones used for nuclear research since their invention for that purpose in 1932. For more, see Figure 33.7. These machines are electrostatic, creating potentials as great as 50 MV, and are used to accelerate a variety of nuclei for a range of experiments. Energies produced by Van de Graaffs are insufficient to produce new particles, but they have been instrumental in exploring several aspects of the nucleus. Another, equally famous, early accelerator is the cyclotron, invented in 1930 by the American physicist, E. Lawrence (19011958). For a visual representation with more detail, see Figure 33.8. Cyclotrons use fixed-frequency alternating electric fields to accelerate particles. The particles spiral outward in a magnetic field, making increasingly larger radius orbits during acceleration. This clever arrangement allows the successive addition of electric potential energy and so greater particle energies are possible than in a Van de Graaff. Lawrence was involved in many early discoveries and in the promotion of physics programs in American. Q: Named after the dutch physicist, the van de graaff is a type of what device used for nuclear research? A:
****
A: accelerator

Answer the following question given this paragraph: Zappy's. Plankton, nekton, and benthos are the three groups of living things in the oceans . CC BY-NC 3.0. Q: Where do plankton, nekton, and benthos live? A:
OPTIONS:
- arctic
- deserts
- forests
- in the oceans
in the oceans

Answer the following question given this paragraph: Ether molecules have an oxygen atom and can engage in hydrogen bonding with water molecules. An ether molecule has about the same solubility in water as the alcohol that is isomeric with it. Q: Ether molecules have an oxygen atom and can engage in hydrogen bonding with which other molecules? A:
OPTIONS:
- carbon dioxides
- proteins
- lipids
- water

Answer: water

input with options: Answer the following question given this paragraph: Steroid hormones are made of lipids, such as phospholipids and cholesterol. They are fat soluble, so they can diffuse across the plasma membrane of target cells and bind with receptors in the cytoplasm of the cell (see Figure below ). The steroid hormone and receptor form a complex that moves into the nucleus and influences the expression of genes, essentially acting as a transcription factor. Examples of steroid hormones include cortisol and sex hormones. Q: What are steroid hormones made of? A:
OPTIONS:
- water
- amino acid
- organisms
- lipids
output:
lipids