science revision
- Created by: Amelia Mackay
- Created on: 14-05-16 17:18
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- Science Revision
- Plants
- Photosynt-hesis
- carbon dioxide+ water--glucose+ oxygen
- Happens in the green leaves that contain chlorophyll.It absorbs the suns energy and converts it into chemical energy
- process where plants make their own food. The carbon dioxide reacts with the water to make glucose and oxygen.
- Leaves
- large surface area
- stomata- pores on the lower surface
- chloroplast-contains chlorophyll
- Reproducti-on in plants
- Female sex organs-carpels
- Male sex organs- stamens
- Pollination- the movement of pollen from one flower to another
- pollen grain germinates and tube passes through stigma to ovule
- tube bursts and releases male gamete into ovule
- male gamete joins with female gamete to make embryo.
- tube bursts and releases male gamete into ovule
- Photosynt-hesis
- Resources
- Fossil Fuels
- coal, oil and gas
- These resources are called non renewable resources because they will eventually run out
- have been buried under the ground for millions of years, therefore called fossil fuels
- ceramics
- crockery, heat resistant tiles, heatproof mats, catalytic converters, insulators, bricks
- group of non metal compound such as clay, sand, glass, oxides.
- hard, heat resistant, don't corrode, non electrical or heat conductors
- hydrocarbo-ns
- contain just hydrogen and carbon atoms
- when burned form carbon dioxide
- Fossil Fuels
- The human body
- Breathing and Respiration
- Aerobic
- Glucose+ oxygen--carbon dioxide+ water+ energy
- In our bodies the glucose reacts with the oxygen and gives us energy
- anaerobic
- this respiration does not need oxygen, just the glucose. 5% of our respiration is releases anaerobica-lly
- it produces lactic acid that causes cramps
- Aerobic
- smoking
- damages walls of alveoli, makes a person short of breath, can cause emphysem-a, can cause cancer when the cells are damaged
- Breathing and Respiration
- Plants
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