Sally is making candy on the stove. She places a thermometer in the candy. What is she measuring? OPTIONS:
- length
- speed
- temperature
- weight
A: temperature

A student combined rice cereal with melted marshmallows. Which best describes what the student made? OPTIONS:
- an atom
- a mixture
- a molecule
- an element
A: a mixture

What is the main source of energy for the water cycle? OPTIONS:
- the Sun
- fossil fuels
- clouds
- the ocean
A: the Sun

In the human body, which system functions primarily to defend the body against disease? OPTIONS:
- digestive
- immune
- nervous
- respiratory
A:
immune