Astronomical Distances
What do we measure with AUs?
Distance between Planets within out own solar system
This term describes a giant cloud of gas and dust in space where stars can be born.
What is a nebula?
This force is responsible for holding billions of stars together to form a galaxy.
Gravity
This is a big ball of gas burning one AU from earth.
The sun
What is the dependent variable?
This is what you measure, or the results
When looking up at the sky astronomers have determined the distance of far away stars by using this.
The parallax angle and triangulation.
A nebula can transform into one of these when gravity pulls gas and dust together until nuclear fusion begins
What is a star?
What force causes plantes to orbit?
Gravity.
If an oven works off the principle of convection current just like mantle has a convection current in our earth's mantle that drives tectonic plate movement do you think the sun also has convection current inside of its core?`
yes
What is the Independent variable?
What you change, if measuring how high you jump the independent variable would be weight added to the person each time they jump and the height would be the dependent variable.
A photon of light is emitted form the sun and travels 365 days, how far has it traveled.
1 light‑year ≈ 9.46 × 10¹² km
≈ 5.88 × 10¹² miles
This is made of rock, ice, and dust.
A comet.
What happens when a star like our sun burns off energy?
It loses gravity and expands. This will make it a red giant.
What happens inside the sun?
Nuclear Fusion =
Hydrogen atoms → fuse into → Helium atoms
Can a theory ever change?
We use this to measure the distance between galaxies and galaxy clusters.
1 megaparsec = 1,000,000 parsecs
≈ 3.26 million light‑years
≈ 3.09 × 10¹⁹ km
Earth’s gravity keeps this natural satellite in orbit and causes ocean tides.
What is unique about our milky way galaxy?
It has fewer stars than most galaxies. This is theorized because of magnetic fields.
Why does nuclear fusion happen in the sun?
Tremendous heat and pressure from gravity.
Why are models important to science?
Cost of failure without prototypes can be expensive
Makes large distances SCALABLE
Helps predict reactions on smaller scales.
Rocky planets such as earth are called terrestrial planets and then there are gaseous planets, name one gaseous planet.
1️⃣ Jupiter
2️⃣ Saturn
🧊🌫️ Ice Giants (Often grouped with gas giants)
Not pure gas, but still giant planets with thick atmospheres rich in hydrogen, helium, and icy materials like methane, ammonia, and water.
3️⃣ Uranus
4️⃣ Neptune
What causes a comets tails?
Solar winds, interestingly enough, the tail always points away from the sun regardless of direction.
This is the fundamental force that keeps all planets, moons, comets, galactic arms, and satellites in motion.
Gravity
Why are quadrants used in science?
To take sample sizes to estimate population densities.