Q: Answer the question

Why does tapping a fork against a water glass produce a sound?
OPTIONS:
- The air expands.
- The fork releases electrons.
- The particles in the objects vibrate.
- The water in the glass forms ripples.

A: The particles in the objects vibrate.

Q: Answer the question

Which of the statements is the most accurate in describing the chemical equation shown below? 2H_{2}(g) + O_{2}(g) -> 2H_{2}O(g) + energy
OPTIONS:
- A solid is produced.
- Energy is released.
- Energy is absorbed.
- Equal numbers of molecules are on both sides of the arrow.

A: Energy is released.

Q: Answer the question

Which process in the water cycle returns water from the surface of Earth to the atmosphere?
OPTIONS:
- condensation
- evaporation
- precipitation
- runoff

A:
evaporation