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Absorbed - PowerPoint PPT Presentation


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Absorbed. Taken in When light hits an object, some colors are absorbed and others are reflected You only see reflected colors. atom. The smallest particle of a substance that has all the properties of that substance. Balanced Forces.

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absorbed
Absorbed
  • Taken in
  • When light hits an object, some colors are absorbed and others are reflected
  • You only see reflected colors
slide2
atom
  • The smallest particle of a substance that has all the properties of that substance.
balanced forces
Balanced Forces
  • Forces that act against each other and do not cause a change in motion.
  • Object is not moving
battery
Battery
  • A device that changes chemical energy into electrical energy.
  • Considered Potential energy.
  • Also called a dry cell
boiling point
Boiling Point
  • Temperature at which liquid boils and changes from a liquid to a gas.
  • Boiling point of water is 100° Celsius.
buoyancy
Buoyancy
  • Ability to float
buoyant force
Buoyant Force
  • The upward push of a liquid or gas on an object.
celsius
Celsius
  • Metric unit used for temperature
  • 0° Celsius is the freezing/melting point of water
  • 100° Celsius is the boiling point of water
characteristic
Characteristic
  • A feature of a person, plant, animal or object that helps identify it.
  • Use your 5 senses.
chemical change
Chemical Change
  • A change that produces a new substance
  • Examples-- burning paper changes it from paper to ashes.
chemical energy
Chemical Energy
  • Stored Energy
  • Batteries
  • Food
chemical symbol
Chemical Symbol
  • A one or two letter abbreviation for an elements name
  • O Oxygen
  • C Carbon
  • CO2 Carbon Dioxide
circuit
Circuit
  • A compete path of conductors that an electric current can flow through
circuit breaker
Circuit Breaker
  • A switch that automatically opens a circuit when too much electricity flows through it
  • “Blew a breaker”
classify
Classify
  • To group by like characteristics.
compound
Compound
  • A substance whose molecules contain atoms of different elements
concave lens
Concave Lens
  • A lens that is thinner in the center and thicker at the edges
  • Bends the light outward
  • Makes things appear smaller
condensation
Condensation
  • The process in which a gas changes into a liquid.
condensation point
Condensation Point
  • The temperature at which a substance changes from a gas to a liquid
conduct conductor
Conduct / Conductor
  • To allow to pass through
  • Matter that allows energy to pass through it
  • Metal is a conductor of heat, electricity and magnetism.
  • Cloth is not a conductor of heat or electricity.
conduction
Conduction
  • The movement of heat between two objects that touch each other
convection
Convection
  • The movement of heat energy through liquids and gases in currents
convex lens
Convex Lens
  • A lens that is thicker in the center and thinner at the edges
  • Bend light inward
  • Makes things larger
crest
Crest
  • The highest part of a wave
current electric
Current (electric)
  • A constant flow of electrons through a conductor
density
Density
  • How thick something is.
dissolve
Dissolve
  • To mix and form a solution with another substance.
  • Ability to dissolve is called solubility.
electric charge
Electric Charge
  • A property of matter
  • Charge can be positive or negative
electric circuit
Electric Circuit
  • A complete pathway of conductors that electrons flow through
electric current
Electric Current
  • A complete loop through which electricity can flow.
  • Called a complete circuit.
  • Called a closed circuit.
electricity
Electricity
  • A form of energy that can move through wires, making it possible to do work.
electromagnet
Electromagnet
  • A temporary magnet created by a flow of electric current around an iron bar
element
Element
  • A pure substance made of only one kind of atom
energy
Energy
  • The ability to do work.
  • Causes changes to matter.
  • Examples: mechanical, chemical, kinetic, potential.
evaporation
Evaporation
  • The process in which liquid changes to a gas.
first law of motion
First Law of Motion
  • An object at rest will remain at rest, and an object in motion will continue moving in a straight line at a constant speed until an outside force acts on it.
food energy
Food Energy
  • A form of energy that is stored in plants and when consumed is converted to energy for animals and humans.
forms of energy
Forms of Energy

Heat

Light

Sound

Solar

force
Force
  • A push or pull that causes a change in motion.
freezing point
Freezing Point
  • The temperature at which a liquid becomes a solid.
  • Freezing Point of water is 0° Celsius.
friction
Friction
  • A force that acts against motion when two surfaces rub against each other.
  • Sliding
  • Drag
  • Rolling
slide42
Gas
  • The state of matter that spreads out evenly to fill a container.
  • Particles move about freely.
  • Has no volume?
grams
Grams

Metric unit used for measuring weight.

gravitation gravity
Gravitation - Gravity
  • The force that pulls all objects in the universe towards one another.
  • Makes things fall.
  • Causes weight
slide45
Heat
  • A form of energy that makes something feel warm.
  • Thermal
  • Solar
  • Electrical
inertia
Inertia
  • The property of matter that keeps it moving in a straight line or keeps it at rest.
  • Newton’s First Law of Motion
insulate insulator
Insulate, Insulator
  • To block the flow of energy.
  • Cloth is an insulator of heat. (hot pad)
  • Rubber is an insulator of electricity. ( an electrician will use rubber gloves or rubber handles)
kinetic energy
Kinetic Energy
  • Energy of Motion
  • Jumping Jacks
light
Light
  • A form of energy that makes it possible to see.
  • If you can see something, it either produces light or reflects light.
liquid
Liquid
  • The state of matter that takes the shape of its container.
  • Particles flow past one another.
  • Has volume.
magnetism
Magnetism
  • A force that attracts or pushes away matter.
slide52
Mass
  • Amount of matter in an object.
  • Measured in grams.
  • Stays the same everywhere.
  • On Earth, mass and weight are the same.
  • My Average Size Spacesuit.
matter
Matter
  • Anything that has mass and takes up space.
melting point
Melting Point
  • Temperature at which a solid melts.
  • Temperature at which a solid becomes a liquid.
  • Melting Point and Freezing Point are the same temperature.
  • Water is 0° Celsius.
mixture
Mixture
  • A combination of two or more substances in which each substance keeps its original characteristics.
  • Can be easily separated.
  • Examples: Salad, Chex Mix
molecule
Molecule
  • A grouping of two or more atoms joined together
  • Example: H2O = water
  • Non-living things are made of atoms
motion
Motion
  • The act of changing place or position.
opaque
Opaque
  • Does not allow light to go through.
  • Cast a shadow.
physical change
Physical Change
  • Changes to appearance.
  • Does not change what the substance is.
  • Examples: melted chocolate
physical science
Physical Science
  • The study of matter and energy.
  • Objective 2 on the TAKS Test.
  • 9 questions
physical states of matter
Physical States of Matter
  • 3 states of matter
  • Solid, Liquid, Gas
pitch vs volume
Pitch vs. Volume
  • Pitch is the highness or lowness of sound.
  • Depends on the frequency of sound waves
  • Volume is soft or loud
potential energy
Potential Energy
  • Energy of Position
  • Standing still
  • Stored energy
  • Gravity
property
Property
  • Similar to characteristics
  • A characteristic you can see, feel, smell, hear or taste. (5 senses)
  • Examples: color, size, shape, odor, or texture.
reflection
Reflection
  • A wave that bounces back off an object.
  • Mirror
refraction
Refraction
  • The act of bending light as it passes through something.
  • Changes direction and speed.
  • Slows the light.
  • Appears broken.
second law of motion
Second Law of Motion
  • An object’s acceleration (speeding up) depends on the size and direction of the force acting on it and on the mass of the object.
solar energy
Solar Energy
  • A form of energy from the Sun.
  • Produces, heat and light energy
solid
Solid
  • The state of matter that has a definite shape.
  • Keeps it shape no matter what the container.
  • Particles packed tightly together.
  • Has Mass and Volume.
solubility
Solubility
  • The ability to dissolve.
  • Salt is soluble in water.
  • Sand is not soluble in water.
solution
Solution
  • Special type of mixture.
  • One substance dissolves into another.
  • Examples: Sugar in tea, lemonade
sound
Sound
  • Caused by vibration.
  • Travels in waves.
  • Pitch vs. Volume
suspension
Suspension
  • A mixture where one substance floats in another.
  • Examples: cereal floating in milk
temperature
Temperature
  • The average kinetic energy of all the molecules in an object.

The higher the average the kinetic energy, or the faster the molecules move, the higher the temperature.

thermal energy
Thermal Energy
  • Energy from heat.
  • HEAT MOVES!!
third law of motion
Third Law of Motion
  • For every action, there is an equal and opposite reaction
transmit transmission
Transmit - Transmission
  • Allows energy to pass through.
  • Similar to Conduction.
  • Metal transmits heat.
transparent
Transparent
  • Clear.
  • Allows light to pass through.
  • Transparencies
translucent
Translucent
  • Allows some light to pass through
  • Wax Paper
volume
Volume
  • How much space something takes up.
  • L x W x H
weight
Weight
  • Measure of the force of gravity on an object.
  • Measured in newtons.
  • Not the same everywhere.