Vocabulary and Definitions Define: the ability to do work. Example: Good food gives Ron and his grandpa lots of energy to work together. Ask: Where do cars get their energy? Define: found in nature; not made by people. Example: Cotton is a natural material used to make clothes. Ask: Can you name a natural material that is used in buildings? Define: harmful materials that dirty or harm the environment. Example: Water pollution, such as garbage and chemicals, can harm animals. Ask: Can you name something that causes air pollution? Define: to make something. Example: The Sun can produce enough solar power to heat this this family’s home. Ask: What word means the same as produce? Define: able to be made new again. Example: Trees are renewable resource because more will always grow. Ask: What does the word renewable mean? Define: to fill in the place of. Example: Soon Tina will replace her car with one that runs on electricity. Ask: Can you name something that you can replace? Define: where something comes from or begins. Example: Wind and solar power are two energy sources we can use. Ask: What are your energy sources? Define: according to customs. Example: Cho and her mother like to eat traditional foods, such as rice and fish. Ask: What is another word for traditional?