Density - No Math
What does the word "density" mean?
Describes how tight/loose the atoms are packed in an object
What is the formula for density?
Density = Mass / Volume
What is the meaning of the word "convection"?
Movement due to heat changing the density
In which layer of the Earth does convection occur?
Mantle
What type of enegry transfer would be used if you cooked a hot dog by boiling?
A. Radiation B. Convection C. Conduction
B. convection
When air is heated, what happens to its density?
It decreases.
What is the density? Use correct units
Mass = 2589 g
Volume = 3.00 mL
Density = 863 g/mL
In the convection lab, what was our heat source to start convection?
Hot water in Styrofoam cup
Where is the source of heat for convection in the Earth?
Inner Core
Getting a sunburn is absorbing to much heat energy through _____?
A. Radiation B. Convection C. Conduction
A. Radiation
What is the density of water? You don't need to do math
1 g/mL or 1 cm3/mL
A piece of wood has a volume of 72 cm3 and has a mass of 108.0 grams. What is the density? Use correct units
Density = 1.5 g/cm3
Where do you see convection happen in your life?
Boiling Water, Air conditioning, convection ovens, cooking soup etc.
In which state(s) of matter(solid, liquid, gas) does convection take place in?
liquids and gasses
Burning yourself on a grill is an example of what energy transfer?
A. Radiation B. Convection C. Conduction
C. Conduction
In general, if something is MORE dense will it float or sink?
Sink
Water has a density of 1 g/ml. If an object has a mass of 20g and a volume of 15 ml, will the object sink or float in water?
sink
In a convection cycle, which temperature rises and which falls?
Hot matter rises and cold matter falls
What happens to an objects density when it gets warmer? Does it increase or decrease?
Density decreases when an object heats up
.
Solar pannels use what type of energy?
A. Radiation B. Convection C. Conduction
A. Radiation
Why did the egg float in salt water but sink in fresh water?
Salt water is more dense than fresh water
Which object will float in water?¿Qué objeto flotará en el agua?
Object #1: Mass= 8.3 g , Volume= 6.0 cm3
Object #2: Mass= 153 g , Volume= 43.89 mL
Object #3: Mass= 52.4 g , Volume= 63.7 mL
Object #3 will float in water because it's density is less than 1 g/mL
Draw a convection cycle. Label the heat source, temperature differences of arrows, and density
Teacher decides if your drawing is correct
In the tea kettle, where would you find the least dense material? Draw or explain your answer
The material closest to top/ surface will be the least dense because it is farthest from the heat source
Warm air rising is an example of
A. Radiation B. Convection C. Conduction
B. Convection