Question

1 ______ Are naturally occurring substances

2 Taking out minerals from the earth is called _______

3 ________ and _______ are called fossil fuels

4 Natural gases are made up of _______

5 _______ is a dark coloured liquid

6 The energy we get from water is called _______​

Answer 1

Answer: 1. Minerals are naturally occurring substances which have certain physical properties and definite chemical composition. Minerals are very important to humankind.

2. The process of taking out minerals from rocks buried under the earth's surface is called mining.

3. Over millions of years, heat and pressure from Earth's crust decomposed these organisms into one of the three main kinds of fuel: oil (also called petroleum), natural gas, or coal. These fuels are called fossil fuels, since they are formed from the remains of dead animals and plants.

4. The largest component of natural gas is methane

5. Petroleum is a dark oily liquid. It has an unpleasant odour. It is a mixture of various constituents such as petroleum gas, petrol, diesel, lubricating oil, paraffin wax, etc.

6. Hydropower is energy in moving water

People have a long history of using the force of water flowing in streams and rivers to produce mechanical energy.

Answer 2

Answer:

1st =mineral

2nd mining

3rd petroleum

4th methane

5th petrolum

6th hydroenergy