Y7-Energy Flashcards
Magnetic
Attraction or repulsión of magnets
Electrostatic
Attraction or repulsion between opposite charges
Thermal
Stored in hot things(the hotter=more energy)
Kinetic
Stored in moving objects
Chemical
Food, fuels or batteries
Elastic
Stretched, squashed or twisted
Find the energy transfer
Flame—>Water
Chemical —> thermal
Heating
Find the energy transfer
Man —>climbs to the top of a hill
Chemical—>gravitational
Mechanical
Gravitational(GPA)
Objects higher up=more energy
Law of conservation of energy
Energy can’t be created or destroyed. It can only be transferred from one store to another.
How do we measure energy
Joules
Convert Jouls—>KiloJouls
/1000
What do living things need energy for
For all life processes(mrs gren)
1kj =
1000J=
1KJ = 1000J
Joules
Kilojoules
Find the energy transfer
Ball on the top of a bench—>floor(pushed)—>bounces up
Gravitational—>kinetic(falls)—>elastic
Mechanical, heating and sounds(slows down(friction))
How do you measure energy in food?
Joules
Kilojoules
Kcal
How do all food chains begin?
Producer
Oil and gas formation
Dead fish and plants fall to bottom of the ocean
Layers of sand and rock accumulate over the rests
Millions of years later those rests transformed into oil and gas due to the heat and pressure.
How to you draw the arrow in a food chain?
And the order of the food chain?
Producer —> Primary consumer—>
(Herbivore or carnivore)
You draw the arrow in the way the energy flows
Where do plant get their energy from, and which store is it?
Photosynthesis
From the sun
Chemical.
Coal formation?
Dead trees fall in to a swamp.
Over millions of years ,heat+pressure turn them in to coal.
How is it called when you have too much fat on your body
Obese
How is called when you have too little fat
Malnurished
Get trolled?
Yes!!!
What is the transfer?
Chemical—> Thermal—> Kinetic—> Whatever you use the electricity for…
1) heating
2) kinetic
3) electricity
