Macmillan McGraw-Hill Science

The living and nonliving things in an area are called _____________.

• the environment

• an ecosystem

• a pod

What is potential energy?

• Kinetic energy

• Wind energy

• Stored energy

• Heat energy

What is the Earth's innermost layer called?

• The crust

• The mantle

• The outer core

• The inner core

Explain the difference between a homogeneous and a heterogeneous mixture.

An adaptation may be a physical characteristic, a skill, or a ________.

• behavior

• prey

• protection

• steward

• mimicry

What is the "Ring of Fire?"

• The section of the volcano where the most activity happens

• The most deadly volcano in the world

• A section along the Pacific Ocean where a hotspot of volcanoes is located

• A group of glaciers and icebergs

Which fossil is the oldest?

• Whale

• Bird

• Dinosaur

• Fish

All living things are called _________.

• prey

• organisms

• partnerships

Some animals _______ from one ecosystem to another to find food and water.

• migrate

• adapt

• hibernate

What is a colloid?

• a type of mixture in which the particles of one material are scattered through another without settling out

• a mixture of substances that are blended so completely that the mixture looks the same everywhere

• a physical combination of two or more substances that are blended together without forming new substances