Unit 456

What is this?

the branch of physics concerned with the properties of sound.

a line of rocks or sand just above or just below the surface of the sea, often dangerous to ships

the job of examining people's eyes and selling glasses or contact lenses to correct sight problems

You can't just ................ your shoulders and do nothing about the situation!

sand or soil that is carried along by flowing water and then dropped, especially at a bend in a river or at a river's opening

a drink of any type

He is .................

the study of the effect of physical forces on objects and their movement

a wall built across a river that stops the river's flow and collects the water, especially to make a reservoir that provides water for an area

What is this sign means? (Def: a place where a railway and a road cross each other)

a long period when there is little or no rain

What is the word part, -logy, means?

One who studies palaeontology

the science or art of making or drawing maps

the scientific study of the universe and of objects that exist naturally in space, such as the moon, the sun, planets, and stars

the study of objects that are shot or thrown through the air, such as a bullet from a gun

What is this sign means?

an area of sea water separated from the sea by a reef

a place for storing liquid, especially a natural or artificial lake providing water for a city or other area