True/False
the process that takes carbon into food chains is called respiration
false it is photosynthesis
what is the definition of hydrosphere
all Earth's water
an example of climate change affecting peoples health
eg air pollution smog, heat stroke, increasing pathogen spread due to warm conditions etc
what is the units for forces?
Newtons
the warming of the Earth's temperature due to extra trapped heat from increased greenhouse gases.
to calculate the weight force, you multiply mass by gravity
true
what is inertia?
the tendency for an object to resist a change in motion
two examples of carbon sinks
ocean, forest, fossil fuel, rocks, etc
What are the units for energy
Why are carbon sinks important
they remove carbon from the atmosphere and this prevents the greenhouse effect from becoming too severe which then prevents global warming
the oldest long term storage of carbon is in fossil fuels
false it is in carbonate rocks
Define climate and weather
climate: long term atmosphere conditions.
Weather: short term day to day temperatures/ conditions
example of an unbalanced force
any reasonable answer
what is the equation to work out acceleration when given the mass and force
acceleration =force/mass a=F/m
How does decreasing wilderness (As shown in David Attenborough) affect the carbon cycle?
Less trees means less carbon is being removed from atmosphere and this contributes to climate change.
friction operates in the same direction as a moving object
false it is in the opposite direction
define a carbon sink
an area that absorbs/stores carbon therefore taking it out of the atmosphere. eg oceans, forests, rocks
two examples of why the sea ice melting is a bad thing
- rising sea levels flooding coastal zones
-habitat loss for polar bears/penguins
-less surface to reflect sunlight and heat
any other reasonable answer
how do you calculate the weight force?
Weight = mass x gravity
gravity is always 9.8
David Attenborough suggests people eat less meat. explain a strategy that could be implemented to enforce this
any reasonable answer
the 4 key processes of the water cycle are: condensation, evaporation, run off, absorption
false, they are: condensation, evaporation, run off and precipitation
define newtons third law
two interacting objects/surfaces will exert equal and opposite forces on one another
what is an example of what David Attenborough suggested we need to do to save our planet explained
reduce population
eat less meat
protect the ocean- ban some fishing
convert to renewable energy
1 out of these 4 plus explanation
Aurora has a mass of 50kg and on Pluto she weighs 500N. Is the acceleration due to gravity on Pluto smaller or greater than the gravity on earth?
acceleration due to gravity on earth is 9.8
on earth Aurora would have a weight of 9.8 x 50 = 475N which is less than the 500N she is on Pluto.
Pluto has a greater gravity constant.
what are two measurements made by humans that prove global warming is real
any reasonable answer:
eg Animal extinction: lemuroid possum cannot survive in increased temperatures and is now believed to be extinct.
rising sea levels, coral bleaching, natural disaster increase, melting sea ice + explanation