Plants
How do plants make energy?
Photosynthesis
What is the difference between aerobic and anaerobic respiration?
Aerobic uses oxygen
Where is a magnet the strongest?
At the poles
What is atomic mass?
Number of protons and neutrons in a nucleus of an atom.
Name 3 fossil fuels
Coal, oil and gas
What is the formula for photosynthesis?
Carbon dioxide + Water= energy= glucose + oxygen
What happens when people become out of breathe during intense exercise?
The body switches to anaerobic respiration
How does an electromagnet work?
When a current is passed through a solenoid the iron core becomes a magnet. When the current is switched off the iron core loses its magnetism.
What is the name of group 7 elements?
Halogens
Name 3 causes of global warming.
Burning fossil fuels
Deforestation
Cow farts
Where does photosynthesis take place in a plant cell?
Chloroplasts which contain green chlorophyll.
What is the formula for aerobic respiration?
Glucose + oxygen = energy = carbon dioxide +water
How do you increase the strength of an electromagnet?
Increase the number of coils and/or increase the electrical current.
How do the elements in group 1 behave as you go down the periodic table?
The become more reactive.
What is the most abundant gas in Earth's atmosphere?
Nitrogen
What are the holes called that enable a plant to breathe?
Stomata
Energy produced when micro-organisms like yeast and bacteria break down carbohydrates.
Name 5 uses of electromagnets in a everyday life.
Scrap metal cranes
MRI machines
Speakers and headphones
Electric motors
Doorbells and buzzers
What do you call monomers that are chained together?
Polymers.
Desrcibe how the carbon cycle works
Plants take in carbon from the atmosphere
People/animals breath out CO2
They eat plants and pass them to the soil through faeces (poo)
Living things die and decompose putting more carbon into the soil
Humans burn things that puts carbon into the atmosphere
Why do the stomata have guard cells?
To open the stomata to allow gases to pass in/out of the plant, then to close to stop too much water from escaping eg during drought etc.
Name 3 uses of fermentation?
Brewing beer
Bread-making
Yoghurt-making
What do you call a wire wound into a tight coil?
A solenoid.
What subtance is KBr?
Potassium bromide
How can we reduce global warming?
Eat less meat
Switch to renewable energy sources
Turn off devices
Use less transport like cars
Travel less
Eat local produce