Energy Part 2 Flashcards
What graph do you use if you are measuring something over a period time?
A line graph.
When you graph what are 3 things every graph must have?
A key, correctly labeled axes, and 3 titles.
Different ______ with the same mass have _____ reactions to the same amount of heat energy. Ex. Just Cool it day 1?
- substances
- different
The ice cube and vinegar cube doesn’t melt in the same way.
Same _____ with different masses react to the same amount of heat energy in what way?
- substances
2. differently
In the make your own cooler lab what was the cooler able to do?
Insulate it which slows down the transfer of heat energy from the air to the beaker of cold water inside the cooler.
What substance will gain more heat energy over time? A larger one of smaller one? Ex. Just Cool it day 2.
A larger one because there is more of it. Ex. The water with the ice pcuk became much colder than the water with the cube. More heat energy was therefore transferred out of the water into the puck.
What does a small temperature change in the make your own cooler lab represent?
It means the cooler wormed because the water did not gain much heat energy.
What would a large change in temp represent in make your own cooler lab?
It means the cooler didn’t work well because the water gained more heat energy.
In the make your own cooler lab what would happen in a warmer environment? Cooler environment?
More heat energy would be transferred. Less heat energy would be transferred.
How can you prevent or slow down the transfer of heat energy?
With substances called insulators.
In the keep it warm lab what did a small temp change in the water represent?
A good insulator because less heat energy was transferred out of the water.
In the keep it warm lab what did it mean if it had a large temp change in the water?
It meant a poor insulator because more heat energy was transferred out of the water.
Energy transfers from _____ regions to _____ regions.
Hotter to colder.
What happens when energy is transferred with warm and cold regions?
It cause warmer region to lose energy (decrease in temp.) and the colder region to gain energy (increase in temp.)
What is thermal energy?
Thermal energy is the motion of atoms or molecules within a substance.
What does thermal energy depend on?
- The temperature
- The total number of atoms in the system
- The state of the material
What is heat?
Energy that is transferred due to the temperature difference between two objects.
When heat energy is added what happens to the temperature, Potential energy, and Kinetic energy?
Increase, decrease, increase.
What happens to the temperature, potential energy, and the kinetic energy when heat energy is removed?
Decrease, increase, decrease.
When to touch metal what happens l?
Energy is transferred from your hand to the metal, the metal increase in temperature, your hand decreases in temperature.
Does kinetic energy increase when heat energy is removed?
No, removing heat energy causes molecules to slow down becoming a different state of matter, this causes the kinetic energy to decrease.
The more mass an object has the more ____ energy is has because there is ____ of it.
- heat
2. more
True or False?
Two different substances of the same state and mass will always react to heat energy the same way.
- False
- When we did the experiment with the vinegar and the ice cube, the two substances gained a different amount of heat energy in 10 minutes.
If molecules in a substance are moving slowly the kinetic energy is ____
Low the less the substance molecules are moving the lower the kinetic energy will be.
The more temperature means the more _____ and _____.
Heat energy and kinetic energy.
A solid would have less _____ and _____ than gas.
Heat energy and kinetic energy.
