Earth's Atmosphere
first layer of the atmosphere
this is used to measure air pressure
barometer
movement within a fluid of hot and cold molecules that causes a transfer of heat
convection
someone who studies the weather
meteorologist
How many years ago was 500 AD?
1521 years ago (2021-500)
2nd layer of the atmosphere
stratosphere
when you pushed in the plunger in the syringe, the volume was smaller, so the particles were c__________
compressed
Which is more DENSE - cold or hot fluids?
COLD
the amount of matter of a substance or object
mass
How many years ago was 3000 BC?
5,021 years ago (2021+3000)
3rd/middle layer of the atmosphere
mesosphere
when you pulled out the plunger of the syringe, the volume increased, so the particles e________
expanded
If I combined:
1L of blue water with 120 mg of salt
1L of red water with 60 mg of salt
Which water would stay at the top? Why?
the amount of space that a substance or object occupies/takes up
volume
What is a leap year?
The earth actually takes 365.25 days to orbit around the sun, so every four years we have an extra day, February 29th, during the "leap year".
4th layer of the atmosphere
thermosphere
Air has mass and is made of particles. TRUE OR FALSE
TRUE
If I combined:
1L of blue water with 120 mg of salt
1L of red water with 60 mg of salt
Which water would sink to the bottom? Why?
blue, because it has more mass but the same volume so it is more dense
mass/volume = d______
density
Why is a day 24 hours?
it takes 24 hours for the earth to rotate
5th layer of the atmosphere
exosphere
Air moves from high pressure to low pressure. This causes wind. TRUE OR FALSE
TRUE
How do you increase density (there are 2 ways)
increase the mass or decrease the volume
the 3 states of matter
solid, liquid, gas
Why is a year 365 days?
it takes 365 days for the earth to orbit around the sun