input: OPTIONS:
- Flatness
- Lenght
- Height
- area Now, answer this question: Answer the following question given this paragraph: The area of a surface is how much space it covers. It's easy to calculate the area of a surface if it has a regular shape, such as the blue rectangle in the sketch below. You simply substitute measurements of the surface into the correct formula. To find the area of a rectangular surface, use this formula:. Q: How much space a surface covers is known as what? A:
A:
output: area

Answer the following question given this paragraph: Visible Light The range of photon energies for visible light from red to violet is 1.63 to 3.26 eV, respectively (left for this chapter's Problems and Exercises to verify). These energies are on the order of those between outer electron shells in atoms and molecules. This means that these photons can be absorbed by atoms and molecules. A single photon can actually stimulate the retina, for example, by altering a receptor molecule that then triggers a nerve impulse. Photons can be absorbed or emitted only by atoms and molecules that have precisely the correct quantized energy step to do so. For example, if a red photon of frequency f encounters a molecule that has an energy step,. Q: What kind of light ranges from red to violet? A:

OPTIONS:
- infrared light
- x rays
- ultraviolet light
- visible light

Answer: visible light

Problem: OPTIONS:
- mass
- momentum
- velocity
- work
Q: Answer the following question given this paragraph: Work is defined differently in physics than in everyday language. In physics, work means the use of force to move an object. The teen who is playing tennis in Figure above is using force to move her tennis racket, so she is doing work. The teen who is studying isn't moving anything, so she is not doing work. Q: What term in physics refers to the use of force to move an object? A:
Answer: work

Problem:OPTIONS:
- mixture
- gas
- chemical
- liquid

Answer the following question given this paragraph: The entropy change is positive as the solid state changes into the liquid state. If the transition went from the liquid to the solid state, the numerical value for would be the same, but the sign would be reversed since we are going from a less ordered to a more ordered situation. Q: The entropy change is positive as the solid state changes into which state? A:
****
A: liquid

Answer the following question given this paragraph: Since life began on Earth, there have been several major mass extinctions. If you look closely at the geological time scale, you will find that at least five major mass extinctions have occurred in the past 540 million years. In each mass extinction, over 50% of animal species died. The total number of mass extinctions could be as high as 20. Q: What events, resulting in death of over half of animal species, have occurred on earth at least five times in the past 540 million years? A:
OPTIONS:
- mass migrations
- microevolutions
- spontaneous mutations
- mass extinctions
mass extinctions

Answer the following question given this paragraph: Temperature decreases in the mesosphere with altitude. This is because the heat source is the stratosphere. Q: What part of the atmosphere is the heat source? A:
OPTIONS:
- troposphere
- magnetosphere
- ionosphere
- stratosphere

Answer:
stratosphere