https://sciencing.com/4-main-types-landforms-8072044.html
What Are the 4 Main Types of Landforms? | Sciencing
Landforms are features on the Earth's surface. There are at least eight kinds of landforms, with four considered major landforms: mountains, plains, plateaus and hills. Different forces of nature shape these landforms, from tectonic activity to erosion.
http://www.edu.pe.ca/southernkings/landforms.htm
Landforms: Face of the Earth - Prince Edward Island
Landforms are natural features of the landscape, natural physical features of the earth's surface, for example, valleys, plateaus, mountains, plains, hills, loess, or glaciers.
https://kids.kiddle.co/Landform
Landform facts for kids - Kiddle
A landform is a word that describes a form of land.Each type of landform is defined by its size, shape, location, and what it is made of.