Take Notes

What is the difference between a wave and energy?

What is the difference between a wavelength and amplitude?

What is the difference between frequency and wavelength?

What is the difference between a wave and a medium?

Vocabulary

Amplitude A wave’s intensity; the maximum distance a waves carries the particles of a medium from one place to another

Energy The ability todo work. Examples of energy include light, sound, heat and electricity

Frequency The number of waves produced during a given amount of time

Medium Matter such as a liquid, gas or solid that mechanical waves carry energy through

Wave A disturbance that carries energy from one place to another

Wavelength The distance between any point on a wave to an identical point in the next wave

4.at 0 ºc, some amount of energy is required to change 1 kg of water from a solid into a liquid. if you had a 2 kg piece of ice, what effect would this have on the amount of thermal energy required to change the water from a solid to a liquid? it would require more energy to change solid water into liquid water because there are more molecules in this larger piece of ice. it would still require the same amount of energy to change solid water into liquid water because the entire piece of ice would still gain the same amount of energy in each case. it would require energy to be removed from the 2 kg piece of ice. the larger piece of ice already has more total energy than the smaller piece of ice, so energy must be removed for the ice to become liquid. it would require less energy to change solid water into liquid water because the energy would spread through the ice more quickly and the ice already has a larger total amount of energy because it is larger than a 1 kg piece of ice.