Heat and temperature
True or false:Heat is transfered from bodies with lower temperature to the ones with higher temperature.
False: Heat is always transfered from bodies with high temperature to the ones with low temperature.
Thermal equilibrium is?
A state when two bodies with different temperature get in contact and the temperature is equal for both bodies and it remains stable in time.
A plantpot hanging from the ceiling is an example of _______ energy
Potential
In Mexico we use __________ degrees
Celsius
Convert 57°C to kelvin
330.15 k
True or false: Temperature measures the average potential energy of particles
False, it is the averge kinetic energy of particles
How is thermal equilibrium reached when you put a spoon inside a hot cup of coffee?
Because the energy is transfered from the hot cup of coffee to the spoon until the temperature are the same
Zamudio dancing the macarena presents _______ energy
Kinetic
What are the fundamental measurement units in the international system?
kilograms, seconds, meters, kelvin
Convert 10° C to °F
50°F
In this kind of heat transfer method a mass of air is moved from one place to another and the hotter the mass of air is, the higher it tries to get.
Convection
True or false: Why an icecream bucket will melt more slowly than a cone of the same ice cream?
Because the inner walls of the bucket will need more time to interact with the exterior than the exterior walls of the bucket.
The addition of kinetic and potential energy
Convert 98 milimeter to meters
0.098 meters
Convert 30°C to °F
86 °F
Radiation method of transfer uses ___________ to transfer the heat to other objects. For example the sun
If you have a big block of ice and you have a jar (1L) and a cup (250ml) of boiling water and you pour them on the block of ice whats is going to happen?
The jar will melt more ice than the cup of boiling water because you have more termic energy in the jar than in a cup of water.
When your cellphone falls from a table in which moment does it have more potential energergy?
When it is about to reach the floor
Convert 325 miligrams to grams
0.325 grams
Convert 41°F to Kelvin
5°C
278.15 K
Give an example of convection, radiation and conduction methods to transfer heat to other objects and mention the measurement units of temperature and heat in th International system of units
UNITS: Joules and Kelvin
If your pour 1L of boiling water (100 °C) on an big ice block and you pour 250 ml of boiling water(100°C) in the same ice block the temperature of the melted water is going to be the same or different for both situations?
It is going to be different because of the proportions of the ice to the quantity of water you pour.
When you cellphone falls from the table to the floor, in which moment it does have potential and kinetic energy different from zero?
In any moment it is falling except when it is on top of the table or on top of the floor
Convert 456 miligrams to kilograms
0.456 grams
0.000456 kilograms
Convert -31°F to Kelvin
-35°C
238.15 K