Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Science Invest 5
test 11/18/22
| questions | answers |
|---|---|
| -energy transfer -increases kinetic energy particles | heating |
| -energy transfer -decreases kinetic energy particles | cooling |
| -movement of energy from one location/place to another | energy transfer |
| -transfer of energy (heat) from one particle to another as a result of contact -energy transfers between particles when they collide | conduction |
| -scientific law stating that "no energy is created or destroyed during energy transfer" -energy can only be transferred | conservation of energy |
| -when temp. is constant, it reaches a state of ... at ... temp. does not change -condition in which a system is experiencing no net change | equilibrium |
| 5.1 = mixing hot and cold -Focus Question: if 2 equal liquids are mixed, what is the final temp. going to be | it will be middle temp. of the hot and cold liquids |
| how do you find the average of liquid temps. | add the temps. of hot and cold together, then divide it by the number of liquid temps. there are -ex. 30 degrees C (hot) + 10 degrees C (cold) divide 2 = 3 degrees C |
| tiny fast moving particles | matter |
| kinetic enegry | object in motion |
| fast particles = | more kinetic energy |
| slow particles = | less kinetic energy |
| kinetic energy and temp. are ... | related |
| -average of kinetic energy | temperature |
| colder substances are... because of ... kinetic energy levels | slower, lower |
| hotter substances are... because of ... kinetic energy levels | faster, higher |
| 5.2 = particle collisions -Focus Question: how does energy transfer from one substance to another | conduction and particle collision |
| change of temp. is evidence of ... | energy transfer |
| Big Ideas -the greater the ... particles, the hotter (the item) is | kinetic energy |
| Big Ideas -energy transfers between particles when they collide -what is it called when energy is transferred through collision | conduction |
| fast particles transfer their energy to... particles | slower |
| what happens after a fast moving particle collides with a slow moving particle | the fast particles become slower |
| what happens after a slow moving particle collides with a fast moving particle | the slow particle becomes fast |
| Big Ideas - ...is energy transfer | heat |
| true/false: -energy is a state of matter -ex. solid, liquid, gas | false, energy is not a state of matter |
| Big Ideas -energy ... moves from higher energy (hot) to lower energy (cold) | always |
| -measure temperature | thermometer |
| how do you measure the temp. of hot water | (imagine water in a cup with a thermometer in it) -the energy flows from the water to the glass bulb, then from the glass to the alcohol in the thermometer * water--glass--alcohol--expand -particles in the alcohol expand and the levels rise |
| how do you measure the temp. of cold water | (imagine water in a cup with a thermometer in it) -energy flows from the alcohol to the glass, then from the glass to the water * alcohol--glass--water (transfer) -alcohol particles contract and levels go down |
| what is temp. | average of kinetic energy particles in a substance |
| how do you measure temp. | thermometer |
| what is heat | energy transfer that raises kinetic energy particles |
| 5.3 = heat -Focus Question: How is heat measured | |
| what is the temperature measurement unit | C or F |
| what is the heat measurement unit | calorie (cal) |
| ... is the amount of heat (energy transfer) needed to raise 1 g (gram) of water 1 C -ex. 1___ will raise the temp. of 1____ of water ..... 25 C to 26 C | 1 calorie |
| what is the formula for calculating the amount of energy transferred | cal= m x ΔT .... calorie = mass (times) x ΔT (triangle T) |
| what does -cal -m -ΔT mean | -cal = calorie -m = mass -ΔT = change temperature (Δ=change T=temperature) |
| what is the formula for calculating change in temperature | ΔT = T final - T initial = *answer will always be positive |
| Calculating Energy Transfer in Calories worksheet -a student mixed 50 g of 80 C water. The final temp. was 25 C -find the change in temp. -use the formula ΔT = T final - T initial = | -80 C - 25 C = 55 C -ΔT = 55 degrees C |
| Calculating Energy Transfer in Calories worksheet -a student mixed 50 g of 80 C water. -ΔT = 55 degrees C -find the amount of energy (calories) transferred from the (hot) water -use the formula cal= m x ΔT | -cal= m x ΔT - 50 g x 55 C = 2,750 C -cal= 2,750 |
| Calculating Energy Transfer in Calories worksheet -a student mixed 60 g of 90 C water. The final temp. was 25 C -find the change in temp. -use the formula ΔT = T final - T initial = | 90 C - 25 C = 65 C ΔT = 65 C |
| Calculating Energy Transfer in Calories worksheet -a student mixed 60 g of 90 C water. The final temp. was 25 C -ΔT = 65 degrees C -find the amount of energy (calories) transferred from the (hot) water -use the formula cal= m x ΔT | -cal= m x ΔT -90 g x 65 C = 5,850 cal=5,850 |
| (extra) How does energy flow? - | (extra) Does a hot or cold substance have more kinetic energy? - |
| (extra) When particles collide, how does the energy transfer? - | (extra) What happens to particles when you mix hot and cold water in order to reach equilibrium? - |
| (extra) What is heat? - | (extra) What is temperature? - |
| (extra) How is temperature measured? - | (extra) What unit of measurement do we use to measure heat? - |
| (extra) How do thermometers work? - | (extra) How does the energy flow when measuring the temp of hot vs cold water? - |
Created by:
keflabrown
Popular Science sets