1. Energy Flashcards
Where do we get energy (1)
From the food we eat
Where does respiration take place
In the cells of living organisms to fuel the body
How do green plants respirate (4)
Through photosynthesize; get food through energy from the sun, water + CO2
Name 5 things humans need to function
~protein ~carbohydrates ~fats ~minerals ~vitamins ~water
How do humans absorb nutrients (2)
~via intestines
~ surplus food is stored in fats and carbs
What parts are in your circulation system?(4)
~heart
~veins
~arteries
~capillaries
What is the goal of our circulation system? (3)
~carry nutrients
~get O2 to all of the body
~ remove waste
What reacts with food to get energy (1)
O2
Give a short description of what energy is? (2)
Energy is needed if anything wants to be done. It is all around us from different sources.
Name different forms we use the sun’s energy (2)
~renewable (unlimeted)
~ non-renewable (limited)
Discuss non-renewable sources (4)
Finite and will be used up, eg
~ oil
~ coal
~paraffin
What is stored energy called
Potential energy
How do atoms/molecules release energy (1)
They have store energy and when they react with each other they release energy
What energy does Ep release
Ek (kinetic) energy of a moving system
Name a bunch of systems transferring (5)
~electrical ~mechanical ~chemical ~gravitational ~nuclear ~biomass ~solar ~optical ~sound/heat ~body
