Heat
What is heat?
It is the transfer of thermal energy from one object to another, when the objects have different temperatures.
What type of food preservation is used to keep fresh peppers or pickles?
Preservation by oil and vinegar
What is friction?
Friction is a force that resists motion when two surfaces rub together
What do you use to check the temperature?
Thermometer
What is conduction?
Heat is transferred by direct contact.
What type of food preservation is used to preserve jelly?
Preservation by sugar
False
Mention two types of energy.
light,heat,electrical,chemical and sound
What is temperature?
It is how hot or cold an object is.
What type of preservation do you use to preserve meat for months?
cold treatment
Is the force that resists the motion of a round object rolling on a surface, like a ball or wheel
Rolling Friction
How is heat used in the kitchen?
to boil water
to heat food in the microwave
to grill chicken
What is convection?
Heat is transferred by the movement of gas or liquid (mass motion of molecules).
What ingredient is used to preserve food by reducing water activity, which slows the growth of bacteria?
Salt
Is a force which appears between two solid surfaces in contact?
Dry Friction
If you slide a box, what kind of friction is used?
Dry friction
What is radiation?
Heat is transferred through space (electromagnetic).
What type of food preservation method is used to sterilize?
heat treatment
Is the resistance that occurs when an object moves through a fluid, like a liquid or gas?
Fluid Friction
What kind of friction is used with the skateboard tires?
Rolling Friction