Unit 2 Lesson 1 Vocabulary

to talk together

• efficient

• converse

• radiation

able to get the results wanted within a minimum amount of time or effort

• observe

• reputation

• efficient

a condition or event that causes or speeds another condition or event

• catalyst

• lead

• luminous

of or relating to a topic that causes the exchange of opposing ideas, often with strong feelings

• sites

• converse

• controversial

heavy, soft, gray metal that is easy to bend

• radiation

• lead

• observe

to make a careful study of

• observe

• catalyst

• sites

of or relating to a steady, glowing light

• reputation

• effecient

• luminous

energy given off in the form of waves

• lead

• controversial

• radiation

what most people think of a person or thing

• reputation

• efficient

• observe

position or location of something

• lead

• observe

• sites