Section 1
Section 2
Section 3
Random
Vocabulary
100
What is radiation?
What is a form of electromagnetic energy that travels in waves, from the sun.
100
What is potential energy?
What is energy that has the ability to be used. It's a type of stored energy.
100
Just because a matter changes state, does NOT mean....
What is it had a physical change.
100
Explain how plants make food.
What is they combine water, sunlight, and CO2. This is a chemical change with forms glucose.
100
Define energy.
What is the ability to cause change.
200
What happens to energy after we use it?
What is energy cannot be created or destroyed, so, it changes form!
200
What's the difference between chemical and physical potential energy?
What is chemical potential energy is energy waiting to be used that will change a substance completely - sugar that is eaten. Physical potential energy is energy waiting to be used that will only cause a physical change in matter - a spring
200
What occurs when a liquid changes back into a solid?
What is condensation.
200
What is glucose?
What is this is a form of sugar formed by photosynthesis.
200
Define kinetic, mechanical, and gravitational potential energy.
What is kinetic - energy in motion mechanical - any form of energy dealing with motion gravitational - a form of stored energy when objects are pulling against gravity.
300
What is the difference between convection and conduction?
What is conduction transfers heat through direct contact of particles. Convection transfers heat through fluids in the air.
300
What the difference between kinetic energy and potential energy.
What is kinetic energy is energy in motion. Potential energy has not yet been set in motion, but builds up stored energy.
300
Explain how water changes states and why.
What is water is a liquid so when it heats up, it EVAPORATES. Once the water is in gas form, it will eventually collect and fall down as water - CONDENSATION.
300
Explain the changes in kinetic and potential energy on a rollercoaster.
What is As the roller coaster climbs a hill, potential energy increases and kinetic decreases. Once at the top of the hill, PE is at its highest and KE is at its lowest. When the rollercoaster hits the bottom of the hill, KE is at its highest and PE is at its lowest.
300
What is a molecule?
What is a particle made up of two or more atoms.
400
What is a medium? NOT the shirt size.
What is this is any solid liquid or gas that energy travels through.
400
What is a joule?
What is this is a unit of energy.
400
What is the difference between a physical change and a chemical one?
What is a physical change does not change the type of matter. A chemical change completely changes the substance into a new type of matter.
400
Explain what happens to the molecules when they change from a solid to a liquid to a gas.
What is when changing from a solid to a liquid, the molecules are packed tightly but then loosen up and move around when changing from a liquid to a gas, the particles move over one another and move more freely which forms a gas.
400
What is a radioactive element?
What is an element that releases energy from tiny particles in the nuclei.
500
What two types of energy NEED a medium?
What is heat and sound energy.
500
What's a calorie?
What is a form of energy that is needed to raise 1 liter of water in your body to about 34 degrees F.
500
Explain why matter changing state, is not necessarily a physical change.
What is heat causes change. Therefore, if a type of matter heats up, it can change state but still be the same type of matter. If the matter heats up enough, it will burn up and change substance all together. Example - water heats up and changes to water vapor. Ice heats up and changes to water - in both cases, it's still water just in a different state. Example - wood heats up, eventually catches on fire - turns to ash - NEW substance!
500
Identify and explain an example of a chemical change and a physical change.
What is chemical - wood burning - this is a chemical change because an entirely new substance is formed, ash. physical - sharpening a pencil - the wood shavings are still wood
500
Explain nuclear energy.
What is nuclear energy is a type of energy that is caused by reactions within the nucleus.
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