Which metric unit is used to describe an object's length? OPTIONS:
- gram (g)
- milliliter (mL)
- centimeter (cm)
- degree Celsius (°C)
A: centimeter (cm)

When a student uses the equation, mass multiplied by change in temperature multiplied by specific heat, what is being calculated? q = m \times C \times \Delta T OPTIONS:
- a phase change
- stored energy
- heat convection
- heat gain or heat loss
A: heat gain or heat loss

Plants need iron to grow. What parts of plants take in iron? OPTIONS:
- roots
- flowers
- stems
- leaves
A: roots

What keeps Mars in orbit around the Sun? OPTIONS:
- friction
- gravity
- magnetism
- solar power
A:
gravity