greenhouse
Definition
A greenhouse is a structure that is made of transparent material, such as glass or plastic and is used to grow plants. The transparent material allows sunlight to enter the greenhouse, which warms the air and the soil. This allows plants to grow even in cold weather.
Greenhouses work on the principle of the greenhouse effect. The greenhouse effect is the process by which gases in Earth's atmosphere trap heat from the sun. This heat keeps Earth's temperature warm enough to support life.
In a greenhouse, the transparent material traps heat from the sun, just like the gases in Earth's atmosphere. This heat keeps the air and the soil in the greenhouse warm, which allows plants to grow even in cold weather.
Greenhouses are used for many different purposes. They are used by commercial growers to produce fruits and vegetables, and they are also used by hobbyists to grow plants for their own enjoyment.
Greenhouses can also be used for scientific research. They can be used to study the effects of different environmental conditions on plant growth.
How can the word be used?
Greenhouses are typically made of glass or plastic and are built to trap heat from the sun.
Different forms of the word
Noun: greenhouse.
Adjective: greenhouse.
Verb: to greenhouse.
Synonym: hothouse.
Etymology
The word "greenhouse" comes from the Old English word "grenehus", which means "green house". The Old English word is thought to be derived from the Proto-Germanic word "grinjan", which means "to be green".
Question
Why are greenhouses useful?
AQA Science Exam Question and Answer
Question:
What is a greenhouse and how does it work?
Answer:
A greenhouse is a structure that is used to grow plants in a controlled environment. Greenhouses trap heat from the sun, which allows plants to grow even in cold weather.
Greenhouses are made of glass or plastic, which allows sunlight to pass through. The glass or plastic also traps heat, which keeps the greenhouse warm. The heat is trapped because the glass or plastic is transparent to visible light but opaque to infrared radiation. Visible light from the sun passes through the glass or plastic and is absorbed by the plants. The plants then release infrared radiation, which is trapped by the glass or plastic. This keeps the greenhouse warm.
Greenhouses can be used to grow a variety of plants, including vegetables, fruits, flowers, and herbs. They are also used to grow plants that would not be able to survive in the cold winter weather, such as tropical plants.
Here are some additional points that could be included in the answer:
- Greenhouses are used all over the world, in both temperate and tropical climates.
- Greenhouses are a form of sustainable agriculture, as they allow plants to be grown in a controlled environment, which reduces the need for pesticides and herbicides.
- Greenhouses can be used to grow plants that would not be able to survive in the wild, such as endangered species.
- Greenhouses can be used to research plant growth and development.