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WorksheetsThermal Energy Lesson 14 Formative
Total questions: 14
Worksheet time: 9mins
When we put the food color into the hot, cold and room temp. water, the color spread most quickly and evenly in...
the HOT water because the molecules are moving FASTER and spread out (mix) the color quicker
the HOT water because the molecules are moving SLOWER so the molecules don't get in the way of the color as much allowing it to spread out
the COLD water because the water is naturally blue and the color we used was also blue
the ROOM TEMP. water because the molecules move FASTER so the molecules don't get in the way of the color as much allowing it to spread out
The candy's color dissolved quicker in
hot water
lukewarm water
room temperature water
cold water
In the Waterbath Lab, where we put one sealed container inside another one we learned that the water temperatures in both the inside and the outside container will become the same temperature eventually, regardless of the initial temperatures in the two containers (cups).
TRUE
FALSE
In his experiment, James Joule discovered that
moving the water quickly makes the water colder because the paddles that turn the water take energy away from the water
moving the water quickly makes the water warmer because the paddles make the water particles move faster and therefore warmer
hot water makes the paddles turn faster
cold water makes the paddles turn slower
One thing that our computer model did NOT demonstrate is that
molecules move at different speeds based on their temperature and energy level
molecules with lots of energy transfer their energy to molecules with less energy
molecules in a solid material are still able to move
molecules in a gas at a certain temperature (for example at 150°C) all move at the same speed and have the same amount of energy
The faster a molecule moves, the less Kinetic energy it has
TRUE
FALSE
In our computer particle models, when particle A that has lots of energy hits particle B with less energy, what happens?
Particle B with less energy will slow down because it gave its energy to particle A
Particle B with less energy will speed up because it received energy from particle A
Particle A with lots of energy will slow down because it received energy from particle B
Particle A will speed up because it received energy from particle B
What do solids have that gases do not?
Shape
More heat/energy
Volume
Less heat/energy
An object whose particles are moving really slowly would be very...
hot
cold
excited
frozen
If you grab a metal handrail that is very cold, energy moves from
the metal handrail to your hand
your hand to the metal handrail
energy cannot transfer from one solid object to another solid object
energy of motion
thermal energy
sondensation
water vapor
kinetic enetgy
Matter in which molecules are constantly moving around and bumping into each other.
mass
gas
liquid
solid
Matter in which molecules vibrate so much that they are far apart.
liquid
solid
gas
thermal energy
Sam placed a glass of water in the refrigerator. After about an hour he took it out and found it to be colder.
What is the most likely thing that happened?
the cold that was in the refrigerator transferred into the water
the particles in the water started to move faster
the cold from the refrigerator radiated into the glass
the heat that was in the water transferred out into the refrigerator
