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Science exam â
Science final
| Term | Definition |
|---|---|
| Mass | How much matter an object has |
| Volume | Amount of space an object fills |
| Density | Mass in a given volume |
| Units used for mass | Mg. G. Kg. |
| Units used for volume | Ml. L. Cm 3. |
| Units for density | G/ml G/ml 3 |
| Equipment used for mass | Triple beam balance |
| Equipment used for volume | Graduated cylinder Flask/beaker |
| Equipment used for density | Mass: triple beam balance Volume: graduated cylinder |
| How to find volume of an irregular object | Displacement. Fill graduated cylinder with set amount of water, add object then subtract the difference. |
| When should you wear safety goggles | Chemicals, Flames, Broken glass, and Fumes |
| Elements in the same group have the same number of ____________ ____________ and _________ _______________ ____________. | Valence electrons and react chemically similar. |
| Elements in the same period have the same number of _____________ ____________. | Electron clouds |
| Charge of proton | Positive |
| Charge of neutron | Neutral |
| Charge of electron | Negative |
| Mass in an atom= | Protons plus neutrons |
| Chemical reaction 5 evidence | Gas produced/odor, Temperature change, Unexpected color, Solid precipitate forms, Light produced |
| Chemical equation | 2h---->2h+5o |
| Molecule | H2O |
| Observation | A factual statement using your 5 senses |
| Inference | A conclusion based on your observations |
| Hypothesis | A statement about what you think will happen in the future |
| What is the main rule when creating a hypothesis | IF THEN statement |
| Balanced in force= | Constant speed, no movement |
| Land breeze | Night, Land cools down quicker than the water at night causing a convection current. Cool air moves out towards the sea. |
| Sea breeze | Day, Land heats up faster during the day. Cool air from the sea moves in towards the land. |
| Describe the movement of fluids during convection | Cool air moves underneath the warm. Warm air rises causing movement. |
| How do warm ocean current affect coastal climate | They bring warmer air and create a warmer climate. |
| How do cold ocean currents affect coastal climates | They bring cold air creating a colder climate |
| What is an Air mass | A large body of air that takes on similar temperatures and humidity |
| How do warm air masses affect weather | Bring warmer weather and low pressure. Humid |
| How do cold air masses affect weather | Bring cold temperatures and high pressure. Dry |
| Air tends to move from ______ to ______ pressure | High to low |
| Winds in high pressure area flow in which direction | Clockwise |
| Winds in low pressure area flow in which direction | Counterclockwise |
| Low pressure areas are associated with what kind of temperatures and humidity | Warmer temperatures and high humidity |
| High pressure areas are associated with what kind of temperatures and humidities | Colder temperatures and low humidity |
| Warm front weather | Warm, humid, light rain that lasts over a few days |
| Cold front weather | Cool, sunny, thunderstorms, clear skies after dry air |
| Law of inertia | an object stays in motion until acted upon by an ubalanced force |
| Law of force and acceleration | The more mass an object has, the more acceleration it has |
| Law of action/ reaction | Action=equal reaction |
| Warm air characteristics | less dense, particles are spread apart, low pressure, particles have lots of energy, move rapidly |
| Cold air characteristics | more dense, particles=close together, high pressure, particles=little energy=more slowly |
| Low pressure characteristics | Counterclockwise, Lousy weather, warm, humid, light rain |
| High pressure characteristics | Clockwise, happy weather, cool, dry, sunny |
Created by:
pcn
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