When water evaporates from Earth's surface into the atmosphere, its molecules enter the gas state. What change in this gas causes molecules to condense into the small water droplets that form clouds?
A: The temperature is reduced.

An element is identified by
A: its number of protons.

Helen is preparing a presentation about objects in the solar system. She includes facts about the order of the planets and their distances from the Sun. Which statement could she include in an accurate presentation?
A: Earth is one astronomical unit from the Sun.

Which best describes why winds at the beach change direction between day and night?
A:
because the temperatures over land and over water change