Test 3 August 2016 Flashcards
(37 cards)
Where does humans energy come from?
Food
What do people need energy for?
move, play, keep warm, work and keep us alive.
What 4 things determine how much energy you need?
AGE - old people use less energy than young people
How active you are - the more sport you do, the more energy you use
HEALTH - if you are sick, your body needs energy to fight germs
GENDER - boys run around more than girls but a tall active girl will use more energy than a lazy boy
ACTIVITY - the more active you are, the more energy you use
What do plants need to grow?
Water, soil and sunlight
What is called when plants absorb the suns energy?
Photosynthesis
Explain energy transfer
The plans and grass absorb the sun.
Animals eat plants so the animals get the energy
Humans eat the animals so humans get energy
Sun energy - grass - animal - human
ENERGY IS PASSED ON
Explain the food chain / energy chain.
The food chain is when energy travels from the sun and is transferred through plants to animals
How is energy stored?
FOOD - gives us energy to move
WOOD - energy is stored in wood in trees, when we burn wood it gives us heat
COAL - used to make heat and light
OIL - Used for petrol, diesel, paraffin and candle wax
NATURAL GAS - used to make heat and light
How is energy stored?
FOOD - gives us energy to move
WOOD - energy is stored in wood in trees, when we burn wood it gives us heat
COAL - used to make heat and light
OIL - Used for petrol, diesel, paraffin and candle wax
NATURAL GAS - used to make heat and light
Name types on output energy
MOVE
HEAT
LIGHT
SOUND
Where does energy come from
The sun
Name energy sources
Electricity Gas Batteries Petrol Diesel
What is the outer ear called?
Pinna
How do you make a musical instrument vibrate? INPUT
Plucking Beating Blowing Shaking The OUTPUT is the sound it makes
What is volume?
Volume is the loud or softness of a sound
What is pitch?
Pitch is a high or low note
What is noise pollution?
Noise pollution is an unpleasant or harmful sound that continues for a long time
How do you know energy is here:
Young people walking
They are moving
movement energy
How do you know energy is here:
trees blowing in the wind
the trees are moving
movement energy
How do you know energy is here:
Fire buring
There are flames, light, heat
light, heat energy
How do you know energy is here:
Man making a noise
We can hear the noise
sound energy
How do you know energy is here:
Tractor moving
The tractor is moving and noisy
movement and sound energy
How do you know energy is here:
Loudspeaker making a noise
We can hear sound
sound energy
How do you know energy is here:
Cat Meowing
We can hear the cat
sound energy
