grade 4 chapter 3 India minerals resources

New words

1. Fuel       =     a material that generates heat                            or power

2.Metals   =     hard and shiny minerals 

3.Fossil Fuels – Fuels made from the remains of plants and animals that lived long ago.

Example: coal, oil, and natural gas.

4.Oilfield – A place under the ground where a lot of oil is found.

Short answers

Q1 What is mining?

Ans -Mining is the process of digging out ores.

Q2 What is a metallic mineral?

Ans- The minerals from which we get metals are called metallic minerals.

Q3 Maya rides the vehicle to school.It is a good source of exercise.It does not cause air pollution.Which vehicle does she ride?

Ans- Maya rides a bicycle.

Long answers

Q1 Discuss the usage of metallic minerals.

Ans- Metallic minerals are used to make things that are strong and shiny. Here are some uses:

1. Iron – Used to make buildings, bridges, and tools.

2. Copper – Used in wires and electrical things.

3. Aluminium – Used to make airplanes, utensils, and cans.

4. Gold and Silver – Used to make jewellery and coins.

Q2.What are fossil fuels?Give examples.Why do we need to use them judiciously?

Ans- Fossil fuels are natural fuels made from the remains of plants and animals that lived millions of years ago. 

Examples:

Coal

Petroleum (oil)

Natural gas

 Reading purposes 

The process of fossil fuels can be explained step-by-step in an easy way:

1. Dead plants and animals – Millions of years ago, plants, trees, and tiny sea animals died.

2. Burial under layers – Their remains got buried under sand, mud, and rocks.

3. High pressure and heat – Over millions of years, heat from the Earth and the heavy pressure from layers above changed these remains.

4. Turning into fuel – The remains slowly turned into coal, oil, and natural gas.

5. Extraction – Today, people dig mines or drill wells to bring these fuels out.

6. Use for energy – Fossil fuels are burned to make electricity, run vehicles, and provide heat.