1) Mother's and Father's Day are in August. The girls made a cake for their mothers on Mothering Sunday. 2) The Arbor day came from the USA and celebrate in Summer. The father of Arbor day is an American President. It is a flower-planting day. 3) On Pancake Day there are pancake-tossing competitions in Britain. 4) Cheese-rolling races are for the young people. 5) The Pumpkin-throwing competition is very popular in America. 6) Maslenitsa is the traditional Russian celebrate. The most interesting thinks about it are pancakes and the scarecrow of Winter.
1) Density is measured in kilograms per cubic meter.
2) Most materials have a higher density than water and sink in water.
3) The density of the material is very important, especially in aviation.
4) Young's modulus is the ratio of the applied force to the elastic deformation of a given material.
5) The more rigid the metal, the less it deforms under load.
6) when the metal is stretched, it first flows, that is, it is plastically deformed.
7) Lead, copper, aluminum and gold are the most malleable metals.
8) Creep resistance is a very important property of materials used in aircraft engines.
Объяснение:
2) The Arbor day came from the USA and celebrate in Summer. The father of Arbor day is an American President. It is a flower-planting day.
3) On Pancake Day there are pancake-tossing competitions in Britain.
4) Cheese-rolling races are for the young people.
5) The Pumpkin-throwing competition is very popular in America.
6) Maslenitsa is the traditional Russian celebrate. The most interesting thinks about it are pancakes and the scarecrow of Winter.