Planets
What is the main difference between Inner (Terrestrial) planets and Outer (Jovian) planets regarding composition and orbit length?
Inner (terrestrial) planets are solid, dense, and rocky with shorter orbits.
Outer (Jovian) planets are gas giants (relatively larger, made up of gases) with longer orbits.
Why is the Sun less dense than Earth, despite its massive size?
That is, it is mostly gaseous (composed of hydrogen and helium).
What two primary forces/reactions drive the formation and development of stars?
Gravity and nuclear fusion reactions.
What state did the Universe begin as, according to the Big Bang theory?
A hot and infinitely dense point, only a few millimeters wide, similar to a supercharged black hole.
I travel all around the world, but never leave the corner. What am I?
A Stamp
How does a planet's distance from the sun affect its speed of revolution?
Planets nearer the sun revolve faster than planets farther from the sun because the gravitational force is greater.
List the three interior layers of the Sun, starting from the center.
Core, radiative zone, and convective zone.
What is a protostar, and what determines the final mass of a star?
A protostar is the collection of spinning clouds and is the earliest stage of a star's life. A star's mass is determined by the amount of matter available in its nebula.
How do scientists estimate the age of the Universe?
By looking for the oldest stars and by measuring the rate of expansion of the Universe.
I have a neck but no head, and I wear a cap. What am I?
A bottle
Why was Pluto downgraded to a dwarf planet?
It failed to meet the criteria of a planet set by the International Astronomical Union (IAU).
(Specifically, the third criterion).
What process occurs in the core that produces the Sun's enormous energy?
Nuclear fusion, where hydrogen is converted to helium.
What process is responsible for stars generating their own energy and shining, and where does it occur?
Nuclear fusion which occurs at the core of the massive spinning clouds of hot gas.
What are the two major stages of the Universe's evolution that followed the Big Bang?
Radiation and matter eras.
Your walking in a mall and you see a room. You walk into the room to see it filled with all kinds of treasure and gold. someone pulls the bar locking you in. The person's tells you that you have to eat one of the three cookies on the side table, and if you pick the right on, they will be set free and give you the treasures. The first cookie will turn you into an animal, the secound cookie will make you a giant with the third one will make you invisable.
Which one should he eat?
He can eat the fist cookie since he can turn into a hamster and squeeze through the bars.
How will you differentiate rotation from revolution?
Rotation is the spinning of an object on its own axis while revolution is the movement of an object around an orbit.
Why do sunspots appear dark?
They appear dark because they are "cooler" than other parts of the surface, due to strong magnetic fields keeping heat from reaching the surface.
What happens to a main-sequence star when it begins to run out of hydrogen fuel?
Larger nuclei begin to form, and the star may expand to become a red giant star or red supergiant.
What force made hydrogen and helium gas come together to form the giant clouds that would become galaxies?
Gravity
you are crossing abridge and it is about to collapse, and see three deep tunnels there. You have to jump in one of them to survive. One tunnel leads to a volcano with hot lava, the second tunnel is a lake filled with hungrey 50 year old piranhas, and the third door is an abyss filled whith spiky and sharp blades.
Which tunnel do you pick to stay survive?
The secound tunnel since piranhas can only up to 20 years and would be dead by then
What separates the inner planets from the outer planets?
The asteroid belt, which is located between the orbits of Mars and Jupiter.
What is a geomagnetic storm?
A major disturbance of Earth’s magnetosphere occurs when there is a very efficient exchange of energy from the solar wind into the space environment surrounding Earth.
What happens to the core of a massive star that has 8 or more times the mass of the Sun, and what does it become?
It is swallowed by its own gravity because no nuclear fusion is happening to support it. It becomes a black hole.
The Grand Unification epoch was named for the unification of which three forces?
Strong nuclear, weak nuclear, and electromagnetic.
You get stuck in a house, and there are three doors, and only one of the doors leads to freedom. One door holds starving wolves who won't think twice before eating you, the second door holds billions of venomous spiders, and the third door holds a raging fire.
Which door do you pick to stay safe?
The third door is the answer. You would just have to wait until the fire goes out.