Density
If I float in water that means that my density is...
Less than water/ Less than 1
Most of the atmosphere is made up of this element
Nitrogen
Greenhouse gases are important to life on earth because
They trap heat and keep our atmosphere warm
Water sticking to the window is an example of
Adhesion
What is the relationship between the specific heat of a substance's to the time it takes to heat up a substance?
Indirect or Negative
Which has more density? An aluminum hat or aluminum foil?
They have the same density
This is where meteors burn in the atmosphere
A carbon source is
Something that adds carbon to the atmosphere
Water sticking to water
Cohesion
My kettle needed 20000 J of energy to heat up water from 15∘C up to 50∘C. What is the mass of the water in the kettle?
(Remember that water's specific heat is 4.18 j/g x C)
136.7g
What is the mass of an rock if the density is 1.5g/mL and the volume is 60mL? (Include the unit)
90g
Why does the oxygen in the air decrease as the altitude increases?
The density decreases as the altitude increases, therefore there are less oxygen atoms in the air
Provide two processes that release carbon
Decomposition, Combustion, Respiration
Water is called the universal solvent because
Of water's ability to be able to dissolve salt, sugar and many other substances
Why is it important that water has a high specific heat and covers 3/4ths of the Earth?
It helps to moderate the weather so it doesn't get too hot or too cold on earth
A block of an unknown substance has a mass of 210g and a volume of 30cm3, what is the density?
7g/cm3
Put the atmosphere layers in order from lowest to highest
Troposphere, Stratosphere, Mesosphere, Thermosphere
Provide an example of a carbon sink besides plants/trees/algae
The ocean
Water's ability to stick to itself and other substances is because
Water is POLAR. (partially positive and partially negative)
How much energy is needed to raise the temperature of 200 g of cooking oil by 50∘C, if the specific heat capacity of this oil is 1.8 J/(g∘C)?
18000 J of heat energy
Estimate by dropping the object into liquids with known density. Observe which liquids the object floats or sinks in.
Which layers of the atmosphere get hotter as the altitude increases?
Stratosphere and Thermosphere
What are four examples of greenhouse gases?
Adhesion and cohesion allowing water to climb up roots of trees
A 120.5g block of silver initially at 20.0∘C absorbs 678 J of heat. If the specific heat capacity of silver is 0.240J/g C, in degrees Celsius, what is the final temperature of the block of silver?
43.4