4th Grade Review Vocabulary 1

1.  abiotic—nonliving parts of an ecosystem

2.  conduct—to behave in a certain way
3.  ecosystem—all the living and nonliving things in an environment
4.  employ—to use something
5.  environment—the soil, air, and water around us that affect living things
6.  field investigation—a scientific study often done outdoors
7.  glaciers—huge sheets of ice that move slowly
8.  gram—a unit of weight in the metric system
9.  journal—a record of events
10.  liter—basic unit of liquid volume in the metric system
11.  measure—to find out how big or small something is
12.  pattern—a repeated set of events, characteristics, or features
13.  precaution—something done beforehand to prevent harm or danger
14.  reasonable—showing or using good sense and thinking
15.  volcano—an opening in the earth’s crust where molten lava and gases erupt