The Sun

Gravity

100

Fix this statement: The sun has a larger gravitational pull than the Earth because it spins faster

The sun has a larger gravitational pull than the earth because it has more mass

200

The mass of the sun is ____________ times bigger than the Earth's mass

333,000

300

Write the question: 28 times that of the Earth's gravity

What is the Sun's gravity?

400

The mass of the sun composes this percentage of the mass of the entire solar system

What is 99.8%

500

Fix this statement: The higher the temperature of an object, the higher the gravitational pull will be

The more mass an object has, the stronger its gravitational pull will be.

Ultraviolet Rays

100

Fix this statement: UV Rays are harmful and serve no positive purpose

The correct amount of UV light allows your body to make vitamin D

200

Ultraviolet waves are a form of an _____________ wave

electromagnetic

300

Fix this statement: The temperature of the ultraviolet waves allow them to enter the skins cells

The energy of the ultraviolet waves allow them to enter the skin cells

400

UV Light entering a cell can cause damage to

The protein and DNA molecules

500

Most of the ultraviolet radiation that reaches earth's surface is what kind of ray?

Longer wavelength UVA rays

Nuclear Fusion

100

Through what process does the sun produce the majority of it's energy?

Nuclear fusion

200

Two of these components of an atom combine during nuclear fusion

Nuclei

300

Fix this statement: Temperatures in the millions of degrees cause the electrons to melt and fuse together

Temperatures in the millions of degrees increase the speed at which the nuclei move, creating enough kinetic energy to overcome the repulsive electrical force between them.

400

Fix this statement: The repulsive electrical force of the electrons usually keeps them apart, but the melting helps overcome the magnetic force

When the nuclei move fast, enough kinetic energy overcomes the repulsive electrical force between them.

500

Explain Nuclear Fusion

Two nuclei with small masses combine to form a nucleus of larger mass. Nuclear fusion reactions release millions of times more energy than can be released by chemical reactions

Radiation

100

Fix this statement: Energy is transferred through electromagnetic waves by condensation

Energy is transferred through electromagnetic waves by radiation

200

True of False: Radiation can only pass through gases

False - Solids, liquids and gases.

300

When radiation strikes material, energy is transferred by these three mechanisms

Absorbed, Reflected or Transmitted

400

Fix this statment: Light colored materials transmit more radiant energy, while dark-colored materials reflect more energy.

Light colored materials reflect more radiant energy, while dark-colored materials absorb more energy.

500

Define Radiation

The transfer of energy by electromagnetic waves

Others

100

Explain the relationship between radiation and electromagnetic waves

Radiation is the transfer of energy by electromagnetic waves

200

How does the sun warm my skin? Use these terms: Nuclear Fusion Energy Electromagnetic Waves Radiation

Nuclear fusion produces energy This energy is transferred via electromagnetic waves The electromagnetic waves reach my skin via radiation The electromagnetic waves cause electrons in my skin to vibrate and gain energy

300

Does the sun have a gravitational pull?

Yes

400

How are electromagnetic waves formed?

Vibrating electric charges

500

What happens to the sun's energy as it enters earths atmosphere and comes toward earth?

Part of it is reflected by the atmosphere Part of it is absorved by the atmosphere Part of it is reflected by the surface Part of it is absorbed by Earth