Science 10/15/2024

Question 1

What’s a star

Answer 1

A massive ball of gas that creates its own energy

Question 2

How does a star create its own energy

Answer 2

Nuclear fusion

Question 3

Nuclear Fusion

Answer 3

a reaction where lighter elements combine to form heavier elements in the process releasing huge amounts of energy

Hydrogen (lighter element) + Hydrogen (lighter element) –> Helium (heavier elements) + Energy

Question 4

Big bang

Answer 4

explains the origin of earth

Question 5

What evidence supports the big bang

Answer 5

• radioactive aftermath
• Red shift
• Expanding universe

Question 6

what will happen to centricity of an ellipse if the distance between foci increases

Answer 6

centricity will increase

Question 7

Jovian Planets

Answer 7

Jupiter and everything under it (reference table)
- Gas giants
- bigger

Question 8

Terrestriol

Answer 8

Mercury, Mars and everything in between (reference table
- Rocky
- Smaller

Question 9

Perihelion

Answer 9

Closer to the sun

Question 10

Apihelion

Answer 10

farther from the sun

Question 11

Geocentric

Answer 11

Earth in in the center

Question 12

Heliocentric

Answer 12

Sun is in the center

Question 13

Ellipse

Answer 13

Shape of an orbit

Question 14

Inertia

Answer 14

The tendency of an object in motion to stay in motion unless acted apon by a outside force (this and gravity is the reason the planets stay in orbit.)

Question 15

Gravity

Answer 15

the force of attraction between two objects (helps Planets stay in orbit)

Question 16

Fastest Velocity
Highest kinetic energy
lowest potential energy
(Perihelion or Appihelion)

Answer 16

Perihelion

Question 17

Slowest Velocity
lowest kinetic energy highest potential energy
(Perihelion or Appihelion)

Answer 17

Appihelion

Question 18

1 law (3 bullets)

Answer 18

• all planets orbit the sun along an eclipse with the sun at one of the foci
• the distance of a planet to the sun changes from its max at aphelion to its min at perrielion
• the ovalness of an orbit is called eccentricity

Question 19

2nd law (2 bullets)

Answer 19

• an imaginary line between the sun and a planet will move through equal areas in equal times.
• planets move faster at perrihelion, slowest at aphelion