The Structure and Formation of Stars START EXIT Funded by Title V HIS Grant at LAMC and U.S Department of Education Corresponds to Ch 7 in book Astro by Seeds Prepared by: Julissa Garcia, Aramik Yousefian Hagop Hadjinian, Tatevik Grigoryan Activity director: Lilit Haroyan Faculty Advisor: Richard Rains

1. In convection… HINT Air is circulating Resistance to the flow of radiation Resistance to the flow of radiation Hot air rises and cold air falls Hot air rises and cold air falls Cold air rises and hot air falls Cold air rises and hot air falls Exit

HINT Air is circulating Resistance to the flow of radiation Hot air rises and cold air falls Cold air rises and hot air falls Correct! next 1. In convection… Exit

Incorrect It’s Hot air falling, cold air falling. back next 1. In convection… HINT Exit

It relates to heat… back Exit

2. Dust and Gas make up… HINT The interstellar medium A teenager’s room The Sun’s core The Earth Exit

HINT The interstellar medium A teenager’s room The Sun’s core The Earth Correct! next 2. Dust and Gas make up… Exit

2. Dust and Gas make up… Incorrect It’s in between objects in a galaxy, all over the universe. back next HINT Exit

In between celestial objects… back Exit

3. This image is an example of HINT Convection Radiation The solar system Conduction Exit

HINT Convection Radiation The solar system Conduction Correct! next 3. This image is an example of Exit

back next 3. This image is an example of Incorrect Ultraviolet rays are a form of radiation the sun expels. nextback HINT Exit

UV Rays… back Exit

4. The breaking of atoms nuclei through reaction is called… HINT Nuclear fission Nuclear fusion Osmosis Jones Gravitational force Exit

HINT Nuclear fission Nuclear fusion Osmosis Jones Gravitational force Correct! next 4. The breaking of atoms nuclei through reaction is called… Exit

4. The breaking of atoms nuclei through reaction is called… Incorrect In Nuclear fission atoms are broken apart and energy is expelled. back next HINT Exit

We use this in power plants… back Exit

5. According to Hydrostatic Equilibrium the layers of a star are… HINT Thick Pushing into each other Total masses equal the sum of all the masses Total masses equal the sum of all the masses Balanced with weight and pressure Balanced with weight and pressure Exit

HINT Thick Pushing into each other Total masses equal the sum of all the masses Balanced with weight and pressure 5. According to Hydrostatic Equilibrium the layers of a star are… Correct! next Exit

5. According to Hydrostatic Equilibrium the layers of a star are… Incorrect Pressure from the lower layer and weight from the upper layer help keep the balance of a star back next HINT Exit

Equilibrium means balance back Exit

6. Where do Neutrinos come from? HINT The core of a galaxy The exterior of Saturn’s rings The exterior of Saturn’s rings Dwarfs The core of our Sun Exit

HINT The core of a galaxy The exterior of Saturn’s rings Dwarfs The core of our Sun Correct! next 6. Where do Neutrinos come from? Exit

Incorrect Neutrinos are those unseeable things that are “missing” detection. back next 6. Where do Neutrinos come from? HINT Exit

back Comes from same place you get your light… Exit

7. A Protostar is a… HINT A gas nebula of stars A cluster of collapsing star A cluster of collapsing star A means of becoming a Hollywood star A means of becoming a Hollywood star A cloud of dust and gas destined to be a star A cloud of dust and gas destined to be a star Exit

HINT A gas nebula of stars A cluster of collapsing star A means of becoming a Hollywood star A cloud of dust and gas destined to be a star Correct! next 7. A Protostar is a… Exit

7. A Protostar is a… Incorrect A protostar is destined to be a star back next HINT Exit

“Proto” mean first in Greek back Exit

8. Interstellar Reddening occurs when… HINT Stars explode A hot star excites nearby gas A hot star excites nearby gas Dust scatters blue light A dense cloud of gas and dust block stars A dense cloud of gas and dust block stars Exit

HINT A hot star excites nearby gas Dust scatters blue light A dense cloud of gas and dust block stars Stars explode Correct! next 8. Interstellar Reddening occurs when… Exit

8. Interstellar Reddening occurs when… Incorrect In between stars there is dust and that dust scatters the blue light and in effect makes everything appear red. back next HINT Exit

There is no blue light… back Exit

HINT Stars explode A hot star excites nearby gas Dust scatters blue light A dense cloud of gas and dust block stars A dense cloud of gas and dust block stars 9. Emission Nebula occurs when… Exit

HINT Stars explode A hot star excites nearby gas Dust scatters blue light A dense cloud of gas and dust block stars Correct! next 9. Emission Nebula occurs when… Exit

9. Emission Nebula occurs when… Incorrect A hot star excites nearby gas and emits photons back next HINT Exit

Heat makes atoms excited and emit photons back Exit

10. Dark Nebula occurs when… HINT Stars explode A hot star excites nearby gas Dust scatters blue light A dense cloud of gas and dust block stars A dense cloud of gas and dust block stars Exit

HINT Stars explode A hot star excites nearby gas Dust scatters blue light A dense cloud of gas and dust block stars Correct! next 10. Dark Nebula occurs when… Exit

10. Dark Nebula occurs when… Incorrect A Dark Nebula is a dense cloud of gas and dust blocking stars. back next HINT Exit

“Dark” implies something is being obscured… back Exit

EXIT TRY AGAIN TRY AGAIN TRY AGAIN TRY AGAIN