Physical Science Test 2

What type of energy transformation occurs when the sun shines on a solar panel

light to electrical

What type energy is associated with a burning candle

light, heat

What type of energy is associated with a moving windmill?

mechanical

Conduction is the transfer of heat energy by

molecular contact.

The sun warming the surface of a rock is accomplished by

radiation

What method of energy transfer requires no medium for transfer?

radiation

In a toaster, electrical energy is transferred into _____ energy

thermal

In a light bulb, _____ energy is transferred into light energy?

(electrical)

If I have 2 blocks of Aluminium (one of 1kg and one of 10 kg) and heat them up with 6,000 Joules of energy. Which one will have the SMALLEST change in temperature?

10 kg

There are 2 pans of water, one has 100 mL in it and one has 1000mL. You add 4000 joules of energy, which one has the bigger change in temperature?

100 ml

If you were to add an equal amount of heat to the following 4 metals, arrange the metals from the coolest to the hottest after the heat is applied. Aluminum 0.900 J/gC Copper 0.387 J/gC Iron 0.452 J/gC Silver 0.236 J/gC

Aluminum, Iron, Copper, Silver

What material would be the coolest after heating

Choose the material with the highest J/KJ temperature

Which statement is the best example of heat energy transfer by conduction?

Heat energy is transferred from the surface soil to the rocks below.

A high specific heat means...

It requires more energy to change temperature

Which statement could be correct if you have two blocks that are made of the same material but one is larger than the other and the temperature of the two blocks is equal.

The heat in the larger block is greater than the heat in the smaller block.

Debbie's mother has different types of pots in her kitchen. Many of them are made of copper and aluminum. Some are made of glass. Which of the following is the best reason why the pots are made of these materials?

They are good conductors of heat.

There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy?

Trenta (The biggest One)

Water has a specific heat of 4.184 J/gºC. Wood has a specific heat of 1.760 J/gºC. What material needs more energy to raise the temperature 1ºC

Water

Which action would help an air-conditioner use less energy on a hot, sunny summer day?

adding insulation in the walls and ceiling

What type of energy is stored in food?

chemical

A pan of boiling water on the stove gets hot because of

conduction

A snowball melts in your hand because of

conduction

Butter melting on warm pancakes occurs through

conduction

The collision of molecules within a substance results in the transfer of energy by

conduction

The process by which air flows from one location in the atmosphere to another is called

conduction

A heater heating up the inside of your car occurs by

convection

Adding hot water to your cold water bath is an example of

convection

During which process does heat transfer occur because of density differences?

convection

During which process of energy exchange does cold air displace warmer air?

convection

Heat energy is transferred in liquids and gases by

convection

In a fan, ___________ energy is converted to mechanical energy.

electrical

In a hydroelectric power plant, mechanical energy of moving water turns turbines which converts the mechanical energy to _________

electrical

Nuclear power plants convert nuclear (chemical) energy into _____ energy.

electrical

What type of energy is usually associated with decreased efficiency in machines and processes?

heat