Ch. 1 The Geography of PA Vocabulary

Half of the Earth

• continent

• hemisphere

• keystone

• landform

The stone at the top of an arch that supports the weight of the other stones

• renewable resource

• fossil fuel

• natural resource

• keystone

A natural feature on Earth's surface such as a river, mountain or gorge

• landform

• natural resource

• renewable resource

• keystone

A ______ is a deep, narrow valley with steep walls.

• river

• keystone

• gorge

• fossil fuel

A smaller river or stream that flows into a larger river

• gorge

• plateau

• continent

• tributary

Materials found in nature that people can use such as food grown in soil, water, trees and minerals.

• landform

• natural resource

• pollution

• keystone

Fuels found in Earth that were made from the remains of plants and animals that lived millions of years ago. They are nonrenewable.

• fossil fuel

• renewable resource

• pollution

• landform

Fossil fuels are examples of this type of resource that cannot be replaced

• renewable resource

• nonrenewable resource

• pollution

• landform

Trees are an example of this type of resource. It can be replaced over time, even if it takes a few years.

• nonrenewable resource

• renewable resource

• pollution

• fossil fuel

Anything that makes the environment dirty

• pollution

• natural resource

• landform

• gorge