What is the main source of energy that causes water to evaporate from the surface of Earth? OPTIONS:
- lightning
- sun
- gravity
- wind
A: sun

Which statement describes a method of sexual reproduction that occurs in plants? OPTIONS:
- Stem cuttings are placed in water and grow roots.
- Seeds are produced from the flower of the plant.
- Underground stems from a plant grow into new plants.
- A leaf falls to the soil, develops roots, and grows.
A: Seeds are produced from the flower of the plant.

Which object is made to reflect light? OPTIONS:
- telescope
- window
- mirror
- eyeglasses
A: mirror

Foam weather stripping is often placed in the frames of doors and windows in a home. What is the purpose of this weather stripping? OPTIONS:
- The weather stripping increases heat transfer by radiation.
- Heat is conducted quickly through the weather stripping.
- The weather stripping reduces heat loss due to convection.
- Heat can transfer through the weather stripping due to reflection.
A:
The weather stripping reduces heat loss due to convection.