Energy (Part 2)

Martha uses a battery powered torch. Describe the energy stores and transfers.

• Chemical energy from the battery is transferred to the thermal store of the bulb by electricity.

• Chemical energy from the battery is transferred to the thermal store of the bulb by lighting.

• Chemical energy from the battery is transferred to the thermal store of the bulb by sound.

• Chemical energy from the battery is transferred to the thermal store of the bulb by heating.

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NGSS.MS-PS3-3

Which of these energy sources when used to generate electricity causes global warming?

• Geothermal energy

• Tidal and wave energy

• Fossil fuels

• Solar and wind energy

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NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

A family is having a barbeque. Describe the energy stores and transfers to cook the meat.

• Thermal store of the coal is transferred to the thermal store of the meat by lighting.

• Chemical store of the coal is transferred to the thermal store of the meat by electricity.

• Chemical store of the coal is transferred to the thermal store of the meat by heating.

• Thermal store of the coal is transferred to the chemical store of the meat by heating.

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NGSS.MS-PS1-2

NGSS.MS-PS1-4

Why are fossil fuels called non-renewable sources of energy?

• Because fossil fuels take few years to form and will not run out.

• Because fossil fuels take millions of years to form and will not run out.

• Because fossil fuels take millions of years to form and will run out as they are used up faster than they are replenished.

• Because fossil fuels take few years to form and will run out.

Describe the energy stores and transfers when a stone flies from a catapult.

• Elastic potential energy of the stretched catapult is transferred to kinetic energy of the flying stone by compression.

• Kinetic energy of the stretched catapult is transferred to elastic potential energy of the flying stone by mechanical force.

• Gravitational potential energy of the stretched catapult is transferred to kinetic energy of the flying stone by mechanical force.

• Elastic potential energy of the stretched catapult is transferred to kinetic energy of the flying stone by mechanical force.

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NGSS.MS-PS3-2

NGSS.MS-PS3-5

Which of these renewable energy sources is NOT available anytime?

• solar

• geothermal

• hydroelectric

• biofuel

Describe the energy stores and transfers when frying an egg.

• Kinetic energy store of the cooking gas is transferred to the thermal store of the frying pan and egg by heating.

• Chemical energy store of the cooking gas is transferred to the chemical energy store of the frying pan and egg by heating.

• Thermal energy store of the cooking gas is trnasferred to the to chemical energy store of the frying pan and egg by heating.

• Chemical energy store of the cooking gas is transferred to the thermal store of the frying pan and egg by heating.

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NGSS.MS-PS1-2

NGSS.MS-PS1-4

Burning 1g of gas raises the temperature of 10 ml of water by 5°C.

Burning 0.6g of petrol raises the temperature of 10 ml of water by 4°C.

Which fuel contains more energy?

• gas

• petrol

• both are the same

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which energy resource does NOT come from the sun.

• fossil fuels and biofuels

• wind and waves

• solar

• tidal and geothermal

Describe the energy stores and transfer in the child on the slide.

• Chemical to kinetic.

• Gravitational potential to thermal.

• Gravitational potential to kinetic and thermal.

• Elastic potential to kinetic.

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NGSS.MS-PS3-1

NGSS.MS-PS3-5