Challenge Game #4(Unit 4 review)

Conservation & Conversion

Temperature Thermal Energy & Heat

Transfer Methods

Words to Know

10 10 10 10 10

20 20 20 20 20

30 30 30 30 30

40 40 40 40 40

50 50 50 50 50

A toy robot can walk and talk and runs on batteries. What type of energy is stored in the batteries?A. chemicalB. kineticC. nuclearD. thermal A. chemical

Inside the sun, hydrogen atoms combine to form helium atoms. This process releases light and warmth. Which form of energy powers the sun?A. electromagneticB. mechanicalC. nuclearD. thermal

C. Nuclear

A car battery stores 12 V of energy. Of this energy, 9 V converts to electrical energy. The remaining energy converts to thermal energy. What is the efficiency of the battery?A. 0.25%B. 0.75%C. 25%D. 75%

D. 75%

The diagram below shows how a guitar string vibrates to produce sound. Which type of energy is converted to sound energy?A. chemical energyB. light energyC. kinetic energyD. thermal energy

C. kinetic

A lamp releases only light and thermal energy. The energy input of the lamp is 120 watts. Of that input, 80 watts is converted to light. How much energy is converted to thermal energy?A. exactly 40 wattsB. exactly 80 wattsC. less than 40 wattsD. more than 40 watts

A. Exactly 40 watts

When determining the temperature of a substance, what property of its particles is being measured?A. kinetic energyB. potential energyC. average kinetic energyD. average potential energy

C. Average kinetic energy

A solid rock is sitting on the ground. Which statement best describes the particles that make up the rock?A. not moving at allB. vibrating, but not changing placeC. constantly sliding over each otherD. always moving from place to place

B. Vibrating but not changing place

Ryan warms some hot chocolate in a microwave oven. How are the particles that make up the hot chocolate different as the temperature increases?A. They move slower.B. They have less energy.C. They move farther apart.D. They are arranged in a pattern.

C. They move farther apart

On a hot day, the sun causes the sidewalk to become very warm. Why are there lines intentional placed between each sidewalk panel?

A.The particles that make up the sidewalk move faster which would cause the concrete to crack B.The particles that make up the sidewalk move closer together which would cause the concrete to crack C.They move freely from place to place which would cause the concrete to crack D.The particles that make up the sidewalk move farther apart which would cause the concrete to crack

D. The particles that make up the sidewalk move farther apart which would cause the concrete to crack

The freezing point of corn oil is about 259 K. By how many degrees is this different from the freezing point of water on the Kelvin scale?A. 14 K B. 47 K C. 114 K D. 159 K

A. 14K (the freezing point of water is 0 celsius which is equal to 273 kelvin – so you need to subtract to get the difference)

Which description defines heat?

A. total thermal energy of an object or substanceB. change in the temperature of a substance in degrees CelsiusC. energy transferred between objects at different temperaturesD. average kinetic energy of the particles that make up a substance

C. Energy transferred between objects at different temperatures

As energy in the form of heat is added to an ice cube, it begins to melt. What causes melting?

A. Heat causes the molecules in the ice cube to expand and forces them apart.B. Heat removes thermal energy from the ice cube and causes it to become liquid water.C. The additional energy causes the bonds between hydrogen and oxygen in the ice cube to break.D. The transfer of thermal energy to the ice cube causes its molecules to move faster.

D. The transfer of thermal energy to the ice cube causes its molecules to move faster

How is temperature related to heat?

A. Temperature is a measure of the heat of an object.B. Heat causes a change in the temperature of an object.C. Raising the temperature causes the heat of an object to increase.D. Temperature and heat are two different ways to measure the same thing.

B. Heat causes a change in the temperature of an object

Many homes are insulated with batting made of puffy fiberglass. How does this type of fiberglass help keep homes warm in winter?A. The fiberglass batting generates warmth, which is carried into the house by convection.B. Fiberglass absorbs energy during the day and then radiates energy toward the home at night.C. Fiberglass batting slows the flow of energy because it is made of glass, which is a good insulator.D. Air trapped in the fiberglass batting is a good insulator, so it slows the transfer of energy from the house.

D. Air trapped in the fiberglass batting is a good insulator, so it slows the transfer of energy from the house.

Sarah heated two cubes of aluminum to 50 °C. Cube A has a volume of four cubic centimeters. Cube B has a volume of two cubic centimeters. If the cubes do not touch each other, which of these statements is true?

A. Cube A has a higher temperature than cube B.B. Cube B has a higher temperature than cube A.C. Cube A has more thermal energy than cube B.D. Cube B has more thermal energy than cube A.

C. Cube A has more thermal energy than Cube B

Conduction, Convection or Radiation?

A huge rock at the state park gets so hot during the day that you can’t sit on it from_______________.

Radiation

Conduction, Convection, or Radiation?

The metal skewer gets so hot that you drop your marshmallow in the campfire because of_______________.

Conduction

The troposphere gets most of its heat through the process shown in the diagram. What type of heat transfer is represented?a. Reflectionb. Radiationc. Conductiond. Convection

D. Convection

Conduction, Convection, or Radiation?

A house burns down. On the house across the street, all of the vinyl siding is twisted and warped by the heat. The heat was transferred across the street by _______________.

Radiation

Conduction, Convection or Radiation?

The cause of weather systems on earth is _______________.

Convection

the transfer of energy by electromagnetic waves; passes through empty space

Radiation

Ability to do work

Energy

energy that is stored in bonds that hold compounds together, when bonds are broken energy is released

Chemical Energy

Reduces heat transfer by creating a barrier between the cold outside and the walls, floor and ceiling inside

Insulator

all of the particles that make up matter are constantly in motion

Kinetic Theory of Matter