tractor
Definition
A tractor is a heavy-duty vehicle that is used to pull or propel other machines or loads. It is typically equipped with large, wide wheels to provide traction on soft or uneven ground.
Tractors are powered by a variety of engines, including petrol, diesel, and electric. They come in a variety of sizes and configurations, depending on their intended use.
Tractors are used in a wide variety of industries, including agriculture, construction, and mining. They are also used by the military and by emergency services.
How can the word be used?
The farmer used the tractor to plough the field.
Different forms of the word
Noun:
a powerful vehicle with large wheels that is used to pull or push heavy loads, especially on farms.
Verb:
to pull or push something with a tractor.
Etymology
The word "tractor" comes from the Latin word "tractor", which means "one who pulls".
The first recorded use of the word "tractor" in English was in 1856.
The word "tractor" is a Latin word, and it is related to the Italian word "trattore" and the Spanish word "tractor".
Question
Why might a tractor be used to pull a trailer rather than a car?
AQA Science Exam Question and Answer
Question:
Discuss the basic principles of how a tractor operates and its significance in modern agriculture. Explain the key components that allow a tractor to perform tasks such as ploughing, planting, and harvesting. Provide an example of a technological advancement in tractor design that has improved agricultural efficiency.
Answer:
A tractor is a versatile agricultural vehicle designed to perform various tasks essential for modern farming. It operates based on the principles of internal combustion engines, converting fuel energy into mechanical power. This power is transmitted to the tractor's wheels or implements through a system of gears and hydraulics.
Key components of a tractor include the engine, transmission, power take-off (PTO), and hydraulic system. The engine generates the necessary power, while the transmission controls the speed and direction of movement. The PTO transfers engine power to agricultural implements such as ploughs and mowers. The hydraulic system enables precise control of implements by using pressurised fluid to operate mechanisms like lift arms.
For example, during ploughing, a tractor's engine provides the power needed to turn the soil, while the PTO drives the plough's rotating blades. The hydraulic system raises and lowers the plough, allowing the farmer to control its depth and angle.
A notable advancement in tractor design is the integration of GPS technology for precision farming. This innovation enables tractors to operate with accuracy and minimal overlap, optimising seed planting, fertilisation, and harvesting. GPS-guided tractors reduce waste, enhance yield, and promote sustainable farming practices.