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Science exam ✅

Science final

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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