"Sciency" Words
Oh...you think you know science?
Science = Math
Read carefully
Test Practice
100
Kinetic Energy is...
a) The energy something has before it is moving
b) The energy something has from its heat source
c) The energy something has because it is moving
c) The energy something has because it is moving
100
Energy is...
a) the ability to make things move or change
b) anything that has mass and takes up space
c) a measure of how hot or cold something is
a) the ability to make things move or change
100
Find the thermal energy of the following system:
1+2+4+5 = 12
100
to make something safe to eat or drink by heating it
pasteurize
100
What is the name of the lowest temperature possible?
absolute zero
200
Anything that has mass and takes up space...
matter
200
True/False: Molecules are atoms joined together in random ways.
False. They are joined in particular ways.
200
Find the average kinetic energy of the following system:
4+6+2+8+10 = 30
30/ 5 = 6
200
After a candle is blown out, the wax of the candle decreases in temperature.
What happens to the molecules of the wax when the temperature of the wax decreases?
The energy of the molecules of the wax decreases.
200
What happens to the motion of particles when they cool down?
The molecules move slower
300
The moment when two objects hit each other...
collision
300
Which will have more thermal energy?
a) A swimming pool of icy water
2) A cup full of cold water
a) A swimming pool of icy water
300
Find the temperature of the molecules in the system below after reaching equilibrium.
2+2+4+4+3+3+6+8 = 32
32/ 8 = 4
300
Rico and Bree have potatoes. Bree heated hers in the fire, but Rico did not. How do their molecules differ?
a. There is no difference because both potatoes are made of the same type of molecules.
b. The molecules of Rico’s potato are smaller than the molecules of Bree’s potato.
c. The molecules of Bree’s potato are moving and the molecules of Rico’s potato are not moving.
d. The molecules of Bree’s potato are moving faster than the molecules of Rico’s potato.
d. The molecules of Bree’s potato are moving faster than the molecules of Rico’s potato.
300
Eric pours iced tea, lowering the glass’s energy. What happens to the tea’s energy?
a. Stays the same.
b. Decreases.
c. Increases.
d. Need more data.
Increases
400
When a system is stable because the molecules are at the same temperature.
equilibrium
400
A measure of how hot or cold something is, based on the average speed of the molecules.
temperature
400
What is the thermal energy of this system?
3+3+3+4+4+4+6+6+7+10=50
400
Mari stacks her laptop on Sam’s, and Arun stacks his on Odessa’s. The diagram shows their energy before touching.
After a while, will Sam or Odessa's laptop will be cooler? How cool will it be?
Odessa's laptop will be cooler. It will have 16.1 energy.
400
Ralph and Sheila stack bricks. The diagram shows their energy before touching.
After a while, whose top brick will be cooler? Explain how do you know?
Sheila’s top brick will be cooler than Ralph’s top brick, because the energy that transferred to Sheila’s was spread out over more molecules.
500
From the EdPuzzle...What are the three ways heat can be transferred?
Convection, Conduction, Radiation
500
Which of the following is an example of a system?
a) A bicycle with gears, pedals, and wheels working together to move
b) A single brick sitting on the ground
c) A flashlight without a battery that has no power.
a) A bicycle with gears, pedals, and wheels working together to move
500
Find the temperature of the molecules in the system below after reaching equilibrium.
2+2+3+5+5+5+4+6+
1+1+1+1 = 36
36/ 12 = 3
500
Flori has two same-sized paint buckets, one outside and one in the garage. The diagram shows their molecules' energy before they touch. Which bucket is hotter? Which is colder? What will happen after they touch?
Before the buckets touch, the garage bucket is hotter than the outside bucket. Once the buckets are touching, the garage bucket will transfer kinetic energy to the molecules in the cooler outside bucket until both buckets reach the same temperature, which will be in between their starting temperatures.
500
Karim stacks a backyard chair onto another indoors. The diagram shows their energy before touching.
Which chair is hotter? Which is cooler? What happens after they touch?
b. The bottom chair is hotter; heat transfers until both reach a middle temperature.