Energy - Source of energy and Characteristics of materials

The study of energy begins with the source of energy. Energy is the product of movement and law. Nothing exists without it. It can not be found "below", in the simplest forms of life, or far away on distant planets or stars. It can not be found. It finds you because it created you. It's source is the Triune GOD. Energy comes from above and outside of time. God moved. The glory of God is light. His light is a creative law order. He moved, His light came and that is the source of all energy!

God's energy, glory and law order produced heaven and earth. Matter and measures were created. Matter has different "measures". But always remember that God is the "Source" and the "heavy weight". He is the energy that created and defined the "measure" of matter and everything else.

With that said let's start today's lessons found at BBC Schools:

1. Material properties

Materials have different properties that make them useful for different jobs. Here are some properties that materials have.

• Transparent or opaque
  Transparent materials do let light through (you can see through them). Opaque materials do not let any light through (you cannot see through them).

• Waterproof
  Waterproof materials do not let water through and do not soak up water.

• Strong
  Strong materials are very difficult to break.

• Flexible
  Flexible materials are easy to bend.

• Hard
  Hard materials are difficult to scratch.

• Magnetic
  Magnetic materials are attracted to magnets.

• Conductors
  Some materials are good conductors of heat. This means heat can travel through them easily. Some materials are good conductors of electricity. This means electricity can travel through them easily.

2. Metals

• Metals come from rocks called ores.
• They are strong, hard and shiny materials that can be hammered into different shapes without breaking.
• Many metals are good conductors of heat and electricity.
• Some metals are magnetic. Iron is the most magnetic metal. Steel is also magnetic because it is made of mostly iron.
• Their properties make them useful for objects such as cutlery, saucepans, cars and coins.

3. Plastics

• Plastics are materials that are not found naturally but are made from chemicals.
• They are strong and waterproof, and can be made into any shape or colour. Many plastics can be made transparent.
• They are not magnetic and do not conduct heat or electricity.
• Plastics are used to make all sorts of things such as plastic bags, plastic bottles and toys.

4. Glass

• Glass is made by melting sand.
• It is normally transparent and can be made into many different shapes.
• Thick glass can be strong, but thin glass will break very easily.
• Glass is used for objects that need to be transparent such as windows and spectacles.

5. Wood

• Wood comes from trees.
• It is strong, flexible and long lasting.
• Wood is used to make things such as furniture that need to be strong and last a long time.

6. Fabrics

• Fabrics are made from thin fibres woven together.
• Some fabrics, such as wool, cotton and silk, are natural (the fibres come from living things). Some fabrics, such as polyester and nylons are made from synthetic fibres, which are made in factories, from chemicals.
• Different fabrics have different properties. Fabrics can be stretchy (a pair of tights), insulating (keep you warm, like a woollen coat) or absorbent (a towel).
• Fabrics are used to make clothes as they are flexible and comfortable, can be warm and do not wear out easily.

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