Energy budget + Energy transfer

Why is the sun important in the formation of most energy sources on Earth?

• The sun radiates light and heat towards Earth, warming the Earth and creating wind, the water cycle, and keeping Earth from freezing.

• The sun does not contribute to most of the energy on Earth. Just solar energy.

• The Sun keep Earth warm. This lets humans create energy because if not we would all just freeze.

• The Sun works with the moon to make energy on Earth by influencing the tides.

Answer explanation

The correct choice explains that the sun's light and heat are essential for warming the Earth, which drives wind and the water cycle, crucial for forming most energy sources, rather than just solar energy.

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS1-6

What is infrared light?

• Light humans can see

• Light that causes sunburns, skin cancer, and eye damage.

• Light that is invisible and felt as heat

Answer explanation

Infrared light is not visible to the human eye but is experienced as heat. It is different from visible light and ultraviolet light, which can cause sunburns and eye damage.

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-1

What is visible light?

• Light that humans can see

• Light that is invisible and felt as heat

• Light that causes sunburns, skin cancer, and eye damage

Answer explanation

Visible light refers to the portion of the electromagnetic spectrum that is detectable by the human eye. It is the light that humans can see, distinguishing it from other types of light that are invisible or harmful.

Tags

NGSS.MS-PS4-2

What is ultraviolet radiation?

• Light that humans can see

• Light that is invisible and felt as heat

• Light that causes sunburns, skin cancer, and eye damage

Answer explanation

Ultraviolet (UV) radiation is a type of light that is not visible to the human eye but can cause harmful effects such as sunburns, skin cancer, and eye damage, making this the correct choice.

Tags

NGSS.HS-PS4-4

Which of the following is an example of a greenhouse gas?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Carbon Monoxide

Answer explanation

Carbon Dioxide is a greenhouse gas that traps heat in the atmosphere, contributing to global warming. Oxygen and Nitrogen are not greenhouse gases, and while Carbon Monoxide can have harmful effects, it is not a primary greenhouse gas.

What is the greenhouse effect?

• recycling used or new plastics and glass

• a process that occurs when gases in Earth's atmosphere trap the Sun's heat

• a process that occurs when gases in Earth's atmosphere leave

• solar radiation entering the atmosphere

Answer explanation

The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's heat, keeping the planet warm. This is correctly described in the second answer choice.

Tags

NGSS.MS-ESS3-5

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

• hotter to colder

• colder to hotter

• hotter to hotter

• colder to colder

Answer explanation

In heat transfer, energy moves from areas of higher temperature (hotter substances) to areas of lower temperature (colder substances). Therefore, heat always flows from the hotter to the colder substance.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The thermal energy the Earth receives from the Sun travels by what process?

• Conduction

• Convection

• Radiation

• space travel

Answer explanation

The thermal energy from the Sun reaches Earth primarily through radiation, which is the transfer of energy through electromagnetic waves. Unlike conduction and convection, radiation does not require a medium to travel.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-3

When two objects are touching, heat is transferred from the warmer object to the cooler object by which process?

• Conduction

• Convection

• Radiation

Answer explanation

Heat is transferred from the warmer object to the cooler object through conduction, which occurs when two objects are in direct contact. Convection involves fluid movement, and radiation does not require contact.

Tags

NGSS.MS-PS1-4

Which form of thermal energy transfer involves the movement of heat in fluids (liquids and gasses)?

• Conduction

• Convection

• Radiation

Answer explanation

Convection is the form of thermal energy transfer that occurs in fluids (liquids and gases) through the movement of the fluid itself, allowing heat to be distributed. Conduction occurs in solids, and radiation does not require a medium.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4