Sink, sank, sunk
Name three things that have a high viscosity:
Varies
States that the buoyant force on an object is equal to the weight of the fluid displaced by an object
Archimedes' Principle
What are the two forms of vaporization?
Boiling and evaporation
Movement of thermal energy from a substance at a higher temperature to a substance at a lower temperature
Heat
What is the unit for pressure?
Pa
An object floats in a liquid. What can you say about the buoyant force on the object?
The buoyant force is stronger than the weight of the object.
States that when a force is applied to a confined fluid, an increase in pressure is transmitted equally to all parts of the fluid
Pascal's Principle
What two properties/aspects of matter determine if a substance is a solid, liquid, or a gas?
volume, shape
What has more thermal energy? The Arctic Ocean or the Mediterranean Sea?
The Arctic Ocean
What is the formula for pressure?
Pressure = force/area
Formula for density:
Density = mass/volume
If force on a liquid increases, then what increases?
Pressure increases
Gas particles move at _____________ speeds and are (close together/far apart) _________________ ______________.
high, far apart
What is the difference between thermal energy and temperature?
Thermal energy is the total kinetic energy
Temperature is the average kinetic energy
What force allows for a penny to carry far more water than the width of the penny?
Surface tension
A 7.4 cm3 sample of mercury has a mass of 102 g. Will it float in water?
No; the density of mercury: 13.8 g/cm3 is greater than the density of water.
According to Archmides’ principle, would an anchor in a completely full pool of water displace more water, or a large ship?
Why?
An anchor. It doesn't float, so the buoyant force isn't as strong.
If I take a substance and place it in a container, and it molds to half the container, what kind of substance is it?
Liquid
Heat is the _____________ of _____________ ____________ from a _____________ substance to a ______________ one.
Heat is the transfer of thermal energy from a warmer substance to a cooler one.
A small book with a weight of 10 N is placed flat on a table. The area of the bottom of the book that is in contact with the table is 0.02 m².
What is the pressure exerted by the book on the table?
10/.02 = 500 Pa
A 5.0 cm3 sample of aluminum has a mass of 13.5g. Will it float in water?
No; the density of aluminum: 2.7 g/cm3 is greater than the density of water.
What is an example of a mechanical system many things use that relies on Pascal’s principle?
Varies
Explain the water cycle using the words: vaporization, evaporation, condensation, liquid, and gas.
Explain using the definitions of heat and thermal energy why sweat helps you cool down:
Heat is the transfer of thermal energy from a warmer substance to a cooler one. So the thermal energy moves from your warm body to the cooler water, taking away heat.
A car with a total weight of 12,000 N is resting on four tires. Each tire has an area of contact with the ground of 0.03 m².
What is the pressure exerted by each tire on the ground?
100,000 Pa