Water has a specific heat of 1 cal/g0C. How many calories would be used to raise 100 grams of water from 10 degrees to 40 degrees.
What is 3000 calories
100
Energy is transferred as heat from ______ to _____.
What is hot to cold
100
Units for temperature
What is Celsius, Fahrenheit and Kelvin
100
Energy in the form of motion is ______energy (potential or kinetic)
What is kinetic
200
__________________ can cause kinetic energy to change into thermal energy. ( gravity, potential energy, heat, friction)
What is friction
200
what is the temperature in kelvins if the temperature is 10 degrees C
What is 283 K
200
A material that heat is easily transferred through is a _____
What is conductor
200
Tool for measuring temperature
What is thermometer
200
What 2 factors affect Kinetic energy?
What is mass and velocity
300
Which method of energy transfer does not involve the movement of matter?
What is radiation
300
Find the specific heat of a 100g piece of metal that gains 300 calories
when it changes 80 degrees in temperature
What is 0.0375cal/gdegree C
300
How much the temperature of an object increases when energy is transferred as heat to the object depends on:
a. temperature b. specific heat
c. thermal energy d. all of the above
What is specific heat
300
What is 200 C on the Kelvin scale
What is 473K
300
Stored energy is called ______ energy
What is potential
400
Energy from the sun reaches the earth by_______
conduction, convection, solar winds or none of the above
What is
none of the above
400
PE = mgh
Calculate the potential energy of a book that has a mass of 2kg and is 2 meter off the ground.
What is 40 joules
400
Which substance can absorb the most energy
iron, lead, aluminum or steam
What is steam
400
____________ is the temperature at which an object's kinetic energy is totally gone.
a. 0 Kelvin b. absolute zero
c. -273 celcius d. all of the above
What is all of the above
400
A book and a feather sitting on the same shelf have potential energy.
Which has greater or are they the same?
What is book has greater
500
Heating by convection can occur through:
solids only, fluids only, gases only, vacuum only
What is fluids only
500
If a piece of wood has a mass of 20 kg and is 2 meters off the ground what is it's kinetic energy just before it hits the ground?
KE = 1/2 mv2
PE = mgh
What is 400 joules
500
The transfer of energy as heat caused by the collision of molecules is called:
conduction, convection, radiation or none of the above
What is conduction
500
On the celcius scale water freezes at ____________
and on the Fahrenheit scale it freezes at ___________.
What is zero and 32
500
The total amount of kinetic and potential energy is called _________energy