How can earthquake affect the human lives?  

Check if the following is a disaster. Classify the following as natural or manmade disaster.

Soil erosion

Check if the following is a disaster. Classify the following as natural or manmade disaster.

Flood

Check if the following is a disaster. Classify the following as natural or manmade disaster.

Nuclear explosion

Replace the underlined word to form the correct statement.

The reading of the Richter scale shows 7, it is regarded as a moderate earthquake.

Replace the underlined word to form the correct statement.

The magnitude of an earthquake depends on the size of the rocks.

Replace the underlined word to form the correct statement.

The outermost layer of the earth is called the core.