1. island - A piece of land surrounded by water.
2. delta - A landform at the mouth of a river where it splits into many channels and deposits sediment.
3. mountain - A large natural elevation of the earth's surface, rising abruptly from the surrounding level.
4. plateau - A flat, elevated landform that rises sharply above the surrounding area on at least one side.
5. canyon - A deep, narrow valley with steep sides, often with a stream or river running through it.
6. peninsula - A piece of land almost entirely surrounded by water but connected to the mainland on one side.
7. valley - A low area between hills or mountains, often with a river or stream flowing through it.
Parent Tip: Review the logic above to help your child master the concept of landform worksheet 4th grade.