Trường Tiểu học Thủ Lệ

The discovery of oil also changed the demographics of the kingdom. Today,…

Igneous rocks are formed from melted rock deep inside the Earth. Sedimentary…

Sediment thickness in the oceans averages about 450 metres (1,500 feet). The…

To shut down a nuclear power plant, the reactor must be brought…

Ancient Japan has made unique contributions to world culture which include the…

The earliest navigation methods involved observing landmarks or watching the direction of…

Appeasement encouraged Hitler to be more aggressive, with each victory giving him…

Economic growth is driven oftentimes by consumer spending and business investment. Tax…

Technological and scientific developments eventually led industries to build factories outside of…

After traditional land routes to India had been closed by the Ottoman…

Observation is essential in science. Scientists use observation to collect and record…

Undergrounds coal mines can drive 2,500 feet (750 meters) into the Earth…

Along convergent plate margins with subduction zones, earthquakes range from shallow to…

Africa’s many tribes each developed their own unique dances, typically accompanied by…

Mali Empire How did Sundiata Keita consolidate his power? It is believed…

As such, the lithosphere includes both the crust and the upper portion…

The Philippines takes its name from Philip II, who was king of…

A rocky outcrop began around 930 meters (3,051 feet) depth. How deep…

How did the British react to the First Continental Congress? They passed…

Send one of your ships boats (or a boat from the shore)…

Southern women engaged in individual, uncoordinated efforts to help. Southern women provided…

You can use an electric toaster or toaster oven. You can use…

On July 2, 1776, the Second Continental Congress, still meeting in Philadelphia,…

How did the carbon atom get from land animals back to the…

He did; however, betray Brutus, after Brutus gave his speech Marc Antony…

To solve this problem, the Inca used a system known as terrace…

The early Islamic Empire expanded because of how they treated people and…

the United States What were the powers of the assemblies? The Assembly…

The crust thickness averages about 18 miles (30 kilometers) under the continents,…

Slow erosion by diverting water runoff away from hills and bluffs. Use…

So when air crosses the equator as it flows from the cold…

On average, a toilet bowl contains 3.2 million bacteria per square inch*.…

A mined, natural diamond is a crystallized carbon structure that is formed…

Modern bells may accommodate up to four divers and have been used…

Green roofs, street trees, pocket parks, and urban gardens are among the…

Scientists tell us the best way to protect endangered species is to…

How did the Egyptian writing system compare with the Mesopotamian system. Sumerian…

The Great Awakening notably altered the religious climate in the American colonies.…