Hydroponics and Greenhouses

Question 1

What are hydroponics?

Answer 1

Plant system that doesn’t require soil

Question 2

What do plants need to make protein?

Answer 2

Nitrogen

Question 3

Name the main three similarities between hydroponics and greenhouses:

Answer 3

1) Increase rate of photosynthesis
2) Increase yield of crops/profits
3) Control temperature and carbon dioxide levels

Question 4

What do greenhouses need to work efficiently?

Answer 4

Sunlight, temperature and carbon dioxide

Question 5

What are the main differences between hydroponics and greenhouses?

Answer 5

Hydroponics more expensive
No soil in hydroponics
Hydroponics used where water is scarce
Less land space required for hydroponics
Hydroponics require more technology e.g. computer software and alarms for maintenance

Question 6

What do hydroponics need to work efficiently?

Answer 6

Carbon dioxide, oxygen and nitrogen

Question 7

What does a greenhouse need in the summer to ensure it doesn’t get too hot?

Answer 7

Shade and ventilation

Question 8

In a greenhouse, why might it be better to install a paraffin heater rather than an electric heater?

Answer 8

Because paraffin burns, making carbon dioxide as a by product

Question 9

Name three reasons why a greenhouse is an ideal environment for growing plants?

Answer 9

1) Temperature - trap the sun’s heat
2) Light - artificial light makes the plants grow
3) Carbon dioxide - paraffin heaters increase amount of CO2