heat transfer
the transfer of heat or electricity directly through a substance or between objects that are touching
conduction
How hot is the sun in degrees C? (approx)
5000-6000 C
Greenhouse gasses are essential for life on Earth because...
Without greenhouse gasses trapping heat in the atmosphere, the Earth would be too cold to sustain life
If a metal spoon and a wooden spoon are placed in a pot of boiling water which one would heat faster and why?
Metal (is a conducter)
heat moving through electromagnetic waves
radiation
The sun is a huge ball of _____
gas
Name 3 greenhouse gasses found in our atmosphere
nitrous oxide, water vapor, CO2, methane, ozone
Robby and Dave go out for a run on a sunny day. Robby is wearing a black cotton tshirt while Dave is wearing a white jersey material top. Robby is complaining about the heat while Dave says he doesn't feel too warm. Why is this?
Dark colours and heavier fabrics absorb more of the heat from the sun while light breathable clothing does not absorb as much heat
a method of heat transfer where particles in a fluid rise while cooler, denser fluids sink to take their place.
convection
The sun has ___________ rays that can damage your skin
ultraviolet or UV
What unit do scientists use to measure the amount of ozone in the atmosphere?
Dobson units
You are reheating a pot of soup on the stove. What type of heat transfer is occuring within the soup?
Convection. Cold denser soup sinks in the pot while the warmer parts of the soup rise to replace
A hot air balloon rising is an example of:
convection
Dark, cooler areas on the suns surface are called
sunspots
Name 2 human activites that contribute to increased greenhouse gasses in the atmosphere.
Burning fossil fuels and deforestation .
How does the ozone layer protect us?
It filters out damaging rays from the sun. Without out, we would get sunburnt almost immediately after going outside!
radiation
You can fit this many Earths inside of the sun
1,300,000
Name one negative consequence of global warming
Rising sea levels, loss of species, more severe storms, hotter temperatures, drought, not enough food
Name the 5 points of particle theory
All matter is made up of particles, Particles are always moving, They have spaces between them, They move faster when heated, particles attract eachother.