mie unit 1

What do you use to cool a room?

• air conditioner

• fridge

Answer explanation

To cool a room, the most effective option is an air conditioner, which is specifically designed for this purpose. A car, television, and fridge do not provide cooling for a room.

What is used to measure temperature?

• thermometer

• clock

Answer explanation

A thermometer is specifically designed to measure temperature, making it the correct choice. Clocks measure time, gauges can measure various parameters, and taps are used for controlling fluid flow.

What do you call a machine that runs on electricity?

• electric motor

• tractor

Answer explanation

A machine that runs on electricity is specifically called an electric motor. Unlike an engine, which typically refers to a combustion engine, an electric motor converts electrical energy into mechanical energy.

What gas do we breathe out?

• carbon dioxide

• nitrogen

Answer explanation

We breathe out carbon dioxide, a waste product of respiration. While we inhale oxygen, the body uses it and produces carbon dioxide, which is then expelled during exhalation.

What do you call a tool that measures pressure?

• gauge

• plug

Answer explanation

A tool that measures pressure is called a gauge. Micrometers measure small distances, multimeters measure voltage and current, and plugs are not measuring tools. Therefore, the correct answer is gauge.

What is the main source of energy for cars?

• diesel

• water

Answer explanation

The main source of energy for cars is diesel, which is a common fuel used in many vehicles. While electricity is also a source for electric cars, the question specifically refers to traditional cars that primarily use diesel.

What do you call a place where things are made?

• company

• factory

Answer explanation

A factory is specifically designed for manufacturing goods, making it the correct term for a place where things are made. While a company may produce items, a factory is the actual location of production.

What do you use to talk to someone far away?

• telephone

• tap

Answer explanation

To talk to someone far away, the best option is a telephone, as it is specifically designed for voice communication over long distances. Television and computer can facilitate communication, but they are not primarily for direct conversation.

What do you call a vehicle that runs on petrol?

• battery

• car

Answer explanation

A vehicle that runs on petrol is commonly referred to as a car. While tractors can also use petrol, they are primarily associated with diesel. Battery refers to electric vehicles, and engine is a component, not a type of vehicle.

What do you call the energy from the sun?

• electricity

• solar energy

Answer explanation

The energy from the sun is called solar energy. It is harnessed through various technologies to generate electricity and heat, making it a renewable and sustainable energy source.