Resources and Rapid Changes

The weathering of rocks into smaller pieces forms what natural resource?

• minerals

• water

• coal

• soil

How would the soil be different in an area that gets very little rainfall? The soil would contain-

• much smaller pieces of rock

• many insects and worms

• a greater variety of plants

• less water

Metals can be used to make objects of different shapes and sizes because metals can-

• float

• grow

• sink

• melt

All of the following are ways to conserve natural resources EXCEPT-

• reduce the amount of water we use

• building new houses

• recycle more plastic

• reuse paper bags

Lava from a volcanic eruption can change the Earth's surface by-

• forming new land

• making oceans boil

• carving deep valleys

• pushing aside hills

Which of the following best describes how earthquakes change the Earth's surface?

• throw rocks and ash into the air

• force lava through holes in the ground

• violently shift the surface of the Earth

• cause clouds to form rain

How do plants contribute to the formation of soil? Plants-

• cover the soil and share the sunlight

• die, decompose, and become part of the soil

• use soil to grow and develop over time

• support the animal life in the soil

A student made a mixture of sand, tiny rocks, small twigs, and some leaves. This student has modeled-

• how rocks change over time

• the life cycle of plants

• the formation of soil

• how landforms are created

Which event forces melted rock from deep within the Earth toward the surface and builds it up on the Earth's surface?

• landslides

• volcanic eruptions

• earthquakes

• mountain building

What characteristic of wood makes it useful as a building material? Wood-

• decomposes very quickly

• is very expensive

• catches fire easily

• can be cut into shapes