Given a scientific passage and an answer, generate a question for the given answer.

[EX Q]: Passage: Carbohydrates include sugars, starches, and fiber. Sugars and starches are used by the body for energy. One gram of sugar or starch provides 4 Calories of energy. Fiber doesn’t provide energy, but it is needed for other uses. At age 13 years, you need about 130 grams of carbohydrates a day. Figure below shows good food sources of each type. Answer: 4
[EX A]: How many calories of energy does one gram of sugar or starch provide?

[EX Q]: Passage: Figure 6.11 The frictional force supplies the centripetal force and is numerically equal to it. Centripetal force is perpendicular to velocity and causes uniform circular motion. The larger the F c , the smaller the radius of curvature r and the sharper the curve. The second curve has the same v , but a larger. Answer: centripetal force
[EX A]: What force is perpendicular to velocity and causes uniform circular motion?

[EX Q]: Passage: Solstice refers to the position of the Sun when it is closest to one of the poles. At equinox, the Sun is directly over the Equator. Answer: equinox
[EX A]:
When is the sun directly over the equator?

