| Archimedes' Principle | ||
| #1 | Archimedes' Principle is also known as what? | The Law of Bouyancy |
| #2 | What is the unit for force? (like buoyant force) | Newtons |
| #3 | According to Archimedes' Principle, how are buoyant force and the weight of displaced fluid related? | They are equal! |
| #4 | Why does shape help determine if something will float? | Broader shape = more buoyant force, so the object can float |
| #5 | Buoyant force and the weight of displaced fluid are both equal to what? | The apparent change in weight of the object! |
| Properties of Solids | ||
| #1 | What is hardness? | resistance to scratching |
| #2 | What is elasticity? | an object's ability to stretch then go back to its original shape |
| #3 | What is tensile strength? | measure of how much stress a material can withstand before breaking. |
| #4 | List all six properties of solids we discussed in class! | malleability, tensile strength, hardness, brittleness, elasticity, and density |
| #5 | If something has very LOW elasticity, it probably is exhibits what other property? | Brittleness, the tendency to shatter before stretching |
| Properties of Fluids | ||
| #1 | Do fluids have density? | YES! |
| #2 | Which are fluids: solids, liquids, and/or gases | gases AND liquids |
| #3 | What is buoyant force? | The upward pushing force of a fluid on something that is floating in it. |
| #4 | Define fluids | matter with molecules that can flow over eachother |
| #5 | Are density and viscosity different? If so, how? | Yes! They are different! Viscosity is resistance to flow, and density is the amount of matter in a given volume. |
| Density, Mass and Volume | ||
| #1 | Units for mass | grams |
| #2 | Units for volume | mL or cm3 |
| #3 | Units for Density | g/mL OR g/cm3 |
| #4 | Equation for density | D = m/v |
| #5 | Solve: what is the volume of something that is 20g and 10g/mL? | V = m/d = (20g) / (10g/mL) = 2mL |
| Miscellaneous | ||
| #1 | ||
| #2 | ||
| #3 | ||
| #4 | How and why do solids differ? | They have different properties, including density, brittleness, hardness, elasticity, malleability, and tensile strength |
| #5 | How and why do things float? | They either have a LOWER density than the fluid they are floating in, or their shape gives them enough buoyant force pushing up. |
| Final Question | |