What is this?
mountain
What is this?
waterfall
What is this?
river
What is this?
beach
What is between the mountains?
valley
What is this?
lake
What is this?
sea or ocean
In which of these is the water saltier? In the lake or in the sea?
In the sea.
Which is higher? The mountain or the hill?
The mountain.
Which is wider? A river or a stream?
A river.
What is this?
Desert.
What is drier? A field or a desert?
A desert.
What is this?
Island.
What is the biggest island in the world?
Greenland.
What is the largest country in the world?
Russia.
What is the widest river?
The Amazon.
