NS TASK 1

Mechanical systems

1. Hammer hitting a nail

2. cutting paper using scissors

3. crane lifting objects

Thermal systems

1. Stove plate heating water in a pot

2. A fire heating the environment

Electrical systems

A Cell or a light bulb in a circuit causing a light bulb to glow

Biological systems

1. a person eating then pushing a wheel barrow

2. energy transfer in an animal food chain

Metal Properties(3)

1. Shiny flexible and malleable

2. Most are solid at room tempreture

3. High boilding points and melting points

4. Good conductors of heat and electricty

Examples of metal(4)

1. Gold

2. Iron

3. Silver

4. Mecury

Non-Metal Properties(2)

1. Most are gasses or solids at room tempreture

2. Solids are dull and brittle

Examples of Non-Metals(4)

1. sulfur

2. carbon

3. oxygen

4. nitrogen

5. oxygen

Advantages of nuclear fuels(3)

1. Very little pollution

2. Sustainable

3. Effective electricity supply

4. Safe when regulations are followed

Disadvantages of Nuclear Fuels(3)

1. Danger of pollution

2. expensive to build

3. danger to radiation

4. Radio active waste dumping risks

Non-renewable energy sorces examples(3)

1. Crude oil

2. natural gas

3. coal

4. uranium

Renewable Energy sorces examples(3)

1. Solar

2. Wind

3. water

Biofuel Advantages(2)

1. Guaranteed market for grain products

2. Development and agricultural production is done in rural areas

3. By production(waste) is the manufacturing of biodiesel is a livestock feed with high nutritional value

Disadvantages biofuel

1. Trees are chopped

2. Raw materials are used as food

3. Expensive to develop