Observe how energy is transferred by heat - 4th Grade Science (2024)

Fromwarm objects tocold objects

From cold objects to warm objects

Fromlarge objects tosmall objects

Fromsmall objects tolarge objects

Correct answer:

Fromwarm objects tocold objects

Explanation:

Heat is an energy that can be transferred just like sound, light, and electrical currents. We use heat in our everyday lives to cook food or warm our houses. Heat travels from warm objects to cold objects.Thishappens because the molecules hit each other, and the faster-moving molecules in the hot object spread that energy into the cooler object.

Heatis the flow of electrons – tiny, negatively charged particles in atoms.

Heatismadeupofwavesof electromagneticenergy.

Heatisthetransferofthermal energy.

Heatisthe movementof energyby vibrationsthrough substancesinthe formofwaves.

Correct answer:

Heatisthetransferofthermal energy.

Explanation:

Heatisaformofenergy thatwecanfeel.Heat is the transfer of thermal energy through vibrations between molecules. As the temperature of an object of substance increases, its molecules will begin to vibrate more quickly.Thermalenergyisthemovementof moleculesthatmakeupanobjector substance.

slower

faster

more organized

messier

Correct answer:

faster

Explanation:

Thermal energy is another term for heat energy. Thermal or heat energy is generated when molecules rub against one another, causing friction. The faster the molecules move, the more heat energy is created. To measure how much thermal energy something has, we take its temperature with a thermometer.

Styrofoam

Wood

Metal

Plastic

Correct answer:

Wood

Explanation:

Three of the items listed are insulators: wood, styrofoam, and plastic, but only one of them will not melt with the heat of the fire. Wood is the best option to keep their hands from burning and the device from melting. Metal is a conductor, so this device would get very hot and transfer heat to the boy's hands.

Conduction, radiation, and convection

Kelvin, radiation, and convection

Heat cannot be transferred or move in three ways.

Conduction, radiation, andtemperature

Correct answer:

Conduction, radiation, and convection

Explanation:

The three ways heat can be moved or transferred are through conduction, radiation, and convection.Conduction is heattransfer betweentwo objectsthatare touching.Radiation is the heattransfer throughairorspace byelectromagnetic waves.Convection is heattransferby acurrentof waterorair.

Plastic

Fabric

Metal

Clay

Correct answer:

Metal

Explanation:

Metal is the best conductor of heat because its atoms are arranged in a way that allows electrons to travel freely, meaning they can pass energy more quickly.

Kelvin

Fahrenheit

Temperate

Temperature

Correct answer:

Temperature

Explanation:

Temperature is the mode by which we express hot and cold. We most commonly do so using measurements in either Fahrenheit or Celsius. Temperature is a manifestation of thermal energy and can be measured using a thermometer.

Insulator

Convector

Instructor

Conductor

Correct answer:

Insulator

Explanation:

Insulators are materials that do not allow heat to escape or be conducted away. Examples of insulators are down clothing, fiberglass, or plastic.

Conductor

Protection

Insulator

Convection

Correct answer:

Insulator

Explanation:

Insulators are materials that do not allow heat to escape or be conducted away. Because the arctic fox lives in a harsh, cold environment, its fur is there to help keep it warm. Most animals that live in frigid environments have a layer of fur to act as an insulator.

It completes a circuit.

It is magnetic.

It is an insulator.

It is a conductor.

Correct answer:

It is a conductor.

Explanation:

Metal is a good conductor of heat because energy passes through it quickly. When a pan is put on a hot stove, the particles closest to the burner begin to move more rapidly. They bump into the slower-moving particles, which causes the heat to spread. In this photo, the metal pan is acting as a conductor to spread the heat coming from the burner.