Heat and Energy Review

Types of Energy Heat Heat Light Light Sound Sound Electrical Electrical Solar (Sun) Solar (Sun) Chemical Chemical Wind Wind Water Water Magnetic Magnetic Mechanical Mechanical Nuclear Nuclear

Vocabulary Thermal Energy – Energy due to moving particles Thermal Energy – Energy due to moving particles Conduction and Conductor is usually metal that allows heat or electricity to move through easily Conduction and Conductor is usually metal that allows heat or electricity to move through easily Insulator keeps heat or electricity from moving (plastic, styrofoam are good insulators) Insulator keeps heat or electricity from moving (plastic, styrofoam are good insulators)

Convection Current the flow of heat energy. When hot air rises (hot air is less dense) it pushes the cold air down creating a circular pattern. Convection Current the flow of heat energy. When hot air rises (hot air is less dense) it pushes the cold air down creating a circular pattern. Radiation Energy comes from the sun also called Solar Energy Radiation Energy comes from the sun also called Solar Energy Static Electricity happens when positive and negative charges are no longer in balance. (charged particles – positive clusters are on the top and negative particles are on the bottom. Static Electricity happens when positive and negative charges are no longer in balance. (charged particles – positive clusters are on the top and negative particles are on the bottom.

Electric Current an electric charge that flows from one place to another. Electric Current an electric charge that flows from one place to another. Closed Circuit is a loop with NO breaks through which electric current can flow (Hint: this is the meaning of closed) Closed Circuit is a loop with NO breaks through which electric current can flow (Hint: this is the meaning of closed) Series Circuit this is a simple circuit where there is only 1 path for the electricity to flow. Example Christmas tree lights..when one goes out they all go out Series Circuit this is a simple circuit where there is only 1 path for the electricity to flow. Example Christmas tree lights..when one goes out they all go out

Parallel Circuit has 2 or more paths for the electrical current to go. This allows the lights to stay lit even if one light goes out. Parallel Circuit has 2 or more paths for the electrical current to go. This allows the lights to stay lit even if one light goes out. Magnetism is a force that acts on moving electric charge and magnetic material that are near a magnet Magnetism is a force that acts on moving electric charge and magnetic material that are near a magnet Magnetic field goes out in all directions Magnetic field goes out in all directions Magnetic Poles all magnets have a north and south pole (North and south attract) (North and North push away – repell) Magnetic Poles all magnets have a north and south pole (North and south attract) (North and North push away – repell)

Electromagnets Electromagnets are supercharged magnets. The magnet is charged through electricity. See page 387 Electromagnets are supercharged magnets. The magnet is charged through electricity. See page 387 An electromagnet is a coil of wire with many loops through which an electric current (usually from a battery) passes through. An electromagnet is a coil of wire with many loops through which an electric current (usually from a battery) passes through.

Other forms of Electricity Wind Wind Water - also known as Hydroelectric Power (Niagra Falls, Hoover Dam) Water - also known as Hydroelectric Power (Niagra Falls, Hoover Dam) Sound is a form of energy that travels in WAVES Sound can travel through solids, liquids and gases Sound is a form of energy that travels in WAVES Sound can travel through solids, liquids and gases

Sound Energy Trough Crest Wavelength Trough Crest

Light Energy Reflection when light rays bounce Reflection when light rays bounce Absorption when an object takes in the light wave Absorption when an object takes in the light wave Transparent materials in which most of the light energy passes through the material (glass) Transparent materials in which most of the light energy passes through the material (glass) Translucent let some light rays pass through but forces the rest of the light rays scatter Translucent let some light rays pass through but forces the rest of the light rays scatter Opaque no light rays can pass Opaque no light rays can pass Refraction bends light for example a prism and the human eye Refraction bends light for example a prism and the human eye

Check what you know What two forms of energy does a camp fire provide What two forms of energy does a camp fire provide –A. Light and fire –B. Light and heat –C. Wood and fire –D. Heat and wood

Which tool would you use to check the temperature of a light bulb. Which tool would you use to check the temperature of a light bulb. –A. beaker –B.Thermometer –C.Graduated Cylinder –D.Triple Beam Balance

A television’s electrical energy is transformed into A television’s electrical energy is transformed into –A.light and sound –B.Magnetic and light –C.Electrical and solar (sun) –D.Chemical and sound

An electromagnet transforms energy from __________ to ____________ An electromagnet transforms energy from __________ to ____________ –A.Nuclear to chemical –B.Thermal to magnetic –C.Electrical to magnetic –D.Electrical to mechanical

A wind mill takes the wind and turns it into ________________energy. A wind mill takes the wind and turns it into ________________energy. –A.solar (sun) –B.nuclear –C.magnetic –D.mechanical

The energy that special panels that are put on a roof to collect are called. The energy that special panels that are put on a roof to collect are called. –A.solar panels –B.thermal panels –C.magnetic panels –D.electrical panels

What tool would you use when you are testing the energy of hot chocolate. What tool would you use when you are testing the energy of hot chocolate. –A.beaker –B.metric ruler –C.thermometer –D.Triple beam balance

What material would you use to build a solar oven. What material would you use to build a solar oven. –A.foil –B.wood –C.plastic wrap –D.wool blanket

What type of energy flows out of a battery What type of energy flows out of a battery –A.light –B.thermal –C.electrical –D.magnetic

A waterwheel provides what type of energy A waterwheel provides what type of energy –A.windmills –B.solar cells –C.geothermal –D.hydroelectric

A solar calculator gets its energy from where? A solar calculator gets its energy from where? –A.heat –B.sound –C.sunlight –D.batteries