Q: The source of energy for the Earth's water cycle is the OPTIONS:
- wind
- Sun's radiation
- Earth's radiation
- Sun's gravity
A: Sun's radiation

Which of the following properties of a substance is conserved during thermal expansion?
OPTIONS:
- mass
- volume
- shape
- distance between particles

mass

Q: Where is an igneous rock such as pumice most likely formed? ---- OPTIONS:
- in a desert
- in a creek bed
- near a volcano
- under a glacier

A: near a volcano

An Italian scientist named Alessandro Volta invented the Voltaic pile in 1800. It was able to produce a steady electrical current. Based on this description, what is the modern equivalent of the Voltaic pile?
===
OPTIONS:
- a wire
- a battery
- a resistor
- a light bulb

a battery

Question:
Why can a small fire be put out by placing a heavy blanket over it?
OPTIONS:
- This lowers the temperature.
- This makes the flames smaller.
- This absorbs the burning substance.
- This keeps oxygen from reaching the fire.
Answer:
This keeps oxygen from reaching the fire.

Q: A son can inherit traits ---- OPTIONS:
- only from his father
- only from his mother
- from both his father and his mother
- from either his father or his mother, but not from both
A: from both his father and his mother