Q: Which statement describes the location of our Sun in the universe?

OPTIONS:
- Our Sun orbits Earth in the Andromeda galaxy.
- Our Sun orbits Earth in the Milky Way galaxy.
- Our Sun is the center of a solar system in the Milky Way galaxy.
- Our Sun is the center of a solar system in the Andromeda galaxy.
A: Our Sun is the center of a solar system in the Milky Way galaxy.
Q: Which distance is the smallest for which it is most practical to use the light-year as a unit of measurement?

OPTIONS:
- the distance between Earth and its Moon
- the distance between Jupiter and the Sun
- the distance between the Milky Way and the nearest galaxy
- the distance between the Sun and the center of the Milky Way
A: the distance between the Sun and the center of the Milky Way
Q: Atoms of which of these elements are part of many organic molecules?

OPTIONS:
- calcium
- magnesium
- oxygen
- silicon
A: oxygen
Q: Which is the most likely response of a human to an increase in temperature?

OPTIONS:
- increasing the amount of perspiration
- increasing waste elimination from the bladder
- a reduction in the desire for liquids
- a contraction in blood vessels in the skin
A:
increasing the amount of perspiration