Questions for Grade7 on Heat
Answers
Answer:
1. Which of the following is the fastest process of heat transfer?
radiation
2. The factors directly proportional to the amount of heat conducted through a metal rod are -
Time of flow of Heat
Area of cross section
Temperature gradient
Explanation:
follow me
Explanation:
Q. Heat is the movement of ______.
answer choices
radiation
thermal energy
cold
fire
Question 2 30 seconds
Q. Thermal energy ALWAYS moves from _____ to _____.
answer choices
solid to liquid
ice to water
hot to cold
solid to gas
Question 3 30 seconds
Q. Heat moves by ______ when it travels through waves.
answer choices
radiation
conduction
insulator
convection
Question 4 30 seconds
Q. Heat moves by ______ when it travels from one solid to another solid.
answer choices
radiation
convection
thermal energy
conduction
Question 5 30 seconds
Q. The way heat moves in liquids and gases is called _______.
answer choices
convection
radiation
conduction
temperature
Question 6 30 seconds
Q. All matter is made of _____ that are constanly moving.
answer choices
insulators
particles
convection
pieces of plastic
Question 7 30 seconds
Q. If an object has particles that are moving very quickly, the object 's temperature is probably _____.
answer choices
cold
slow
big
hot
Question 8 30 seconds
Q. If an object has particles that are moving very slowly, the object's temperature is probably ______.
answer choices
hot
small
cold
big
Question 9 30 seconds
Q. What scale do we use to measure temperature?
answer choices
thermometer
Celsius
both Fahrenheit & Celsius
Fahrenheit
Question 10 30 seconds
Q. Heat from the sun travels to Earth by _____.
answer choices
conduction
convection
insulation
radiation
Question 11 30 seconds
Q. Which is a conductor?
answer choices
wool sweater
aluminum foil
oven mitt
wooden spoon
Question 12 30 seconds
Q. Which is an insulator?
answer choices
wooden spoon
silver spoon
steel spoon
aluminum foil
Question 13 30 seconds
Q. Which object produces (makes) heat?
answer choices
thermometer
rug
jacket
fire
Question 14 30 seconds
Q. Grilling hot dogs on a fire fueled by charcoal is an example of heat produced by ____.
answer choices
friction
burning fuels
mixing matter
electricity
Question 15 30 seconds
Q. The energy of moving particles in matter is called _____.
answer choices
thermal energy
chemical energy
electrical energy
mechanical energy
Question 16 30 seconds
Q. How does thermal energy move in solids?
answer choices
insulation
conduction
radiation
convection
Question 17 30 seconds
Q. The flow of thermal energy from warmer objects to cooler objects is called ______.
answer choices
heat
movement
friction
energy
Question 18 30 seconds
Q. To measure the temperature difference between two cups of water, you would use a _____.
answer choices
measuring cup
ruler
thermometer
balance scale
Question 19 30 seconds
Q. Which material would NOT make a good baking pan (for high temperatures in the oven)?
answer choices
aluminum
plastic
steel
glass
Question 20 30 seconds
Q. Sawing a piece of wood causes the end being sawed to become warm. In this case, heat is produced by ____.
answer choices
burning fuels
mixing matter
electricity
friction
Question 21 30 seconds
Q. Glass, steel, and aluminum are good examples of ______.
answer choices
insulators
thermal energy
conductors
radiation
Question 22 30 seconds
Q. Plastic foam, wood, and rubber are good examples of ______.
answer choices
conductors
insulators
solar energy
convection
Question 23 30 seconds
Q. The heat from a hot burner to a pot is transferred by ______.
answer choices
convection
insulation
radiation
conduction
Question 24 30 seconds
Q. The way the heat is moving from the hot coffee is called...
answer choices
convection
radiation
insulation
conduction
Question 25 30 seconds
Q. Insulation is used in the walls of a building to ____.
answer choices
trap solar energy
keep thermal energy from moving through the walls
conduct thermal energy
keep cold air from moving through the walls
Question 26 30 seconds
Q. A metal spoon placed in a bowl of hot soup is heated by _____.
answer choices
radiation
conduction
friction
convection
Question 27 60 seconds
Q. On a hot summer day, which shirt would you put on to make sure you stay cool while you are outside playing?
answer choices
A black shirt because it reflects the sun's energy.
A white shirt because it reflects the sun's energy.
A black shirt because it absorbs the sun's energy.
A white shirt because it absorbs the sun's energy.
Question 28 60 seconds
Q. When holding a cup of ice water, your warm hand becomes cold. How does the heat transfer?
answer choices
From the cold cup to your hand
From the cold cup to the warm air
From the ice to your hand
From your warm hand to the cold cup.
Question 29 60 seconds
Q. Jake says his thermometer reads 65 degrees