Chapter 5Lesson 1

EarthPages 104-109

Chalk TalkAs a class, let’s write down what we know about Earth. Without any talking, come to the front of the room one-by-one and write what you know

about Earth. It may be a whole new idea, or an extension of

someone else’s thought.

A physical feature of the land is called a landform.

The tallest of all landforms are mountains.

Vast areas of land without mountains or hills are called

plains.

Valleys and canyons are examples of landforms shaped

by water.

Mounds, called sand dunes, form where wind blows sand.

The gently sloping edge of a continent that connects the

shore to the sea is a continental shelf.

Underwater mountains that run through an ocean form an

ocean ridge.

Features that look like canyons in the ocean floor are called

trenches.

The name of a region of land where water

drains into a river is a drainage

basin.We live in the

Susquehanna River drainage basin.

The movement of a river slows down as it nears the ocean, dropping deposits that form

triangle-shaped landforms called deltas.

How a delta is formed.

Please Do Now!In the margin of your paper,

describe what a hard-boiled egg is like.

Share what you wrote with a partner.

Scientists have divided the interior of the Earth into four

main layers.

The outermost layer of Earth is made up of rock, called the

crust.

crust

Below the crust lies a layer of rock, called the mantle.

mantle

Rock in the mantle can move or slowly flow because of great

pressure and high temperature.

The outer core is below the mantle and is made mostly of

melted iron.

outer core

The sphere of solid material at Earth’s center is called the

inner core.inner core

Exit QuestionDo you think wind, water, or the Earth itself was the last factor to affect the landform where you

live?

Share your answer with a

partner.

Since we live in a valley, water was the last factor to affect it.