Q: Fact 1: When water freezes , that water expands. Fact 2: Upon further cooling to 32 degrees Fahrenheit, water expands as it turns to ice. Given the two facts above, when does water freeze into ice? | OPTIONS:
- colder weather
- Under 32 degrees
- Physical weathering
- evaporation
- vaporization
- Never
- Only at 32 degrees
- Over 32 degrees
A: Under 32 degrees

Q: Fact 1: Refracting sunlight causes sunlight to split into different colors. Fact 2: Lenses bend, or refract, light. Given the two facts above, what causes sunlight to split into different colors? | OPTIONS:
- energy
- heat
- a wave
- moonlight
- paint
- Energy.
- rocks
- lenses
A: lenses

Q: Fact 1: Erosion causes a river to become deeper and wider. Fact 2: Weathering and erosion continue to shape it today. Given the two facts above, weathering causes what to become deeper and wider? | OPTIONS:
- a landslide
- Sediment
- a mountain
- a volcano
- soils
- rock
- flooding
- a river
A: a river

Q: Fact 1: Astem is used to store water by some plants. Fact 2: When it rains, the roots absorb water quickly and the plants store the water in the stems. Given the two facts above, some plants store water after absorbing it with what? | OPTIONS:
- the petals
- Roundworms
- energy
- the roots
- Roundworms.
- the succulents
- fibrous
- the arms
A: the roots