02 - Motions of Planets and Other Celestial Bodies

Question 1

turning of the body on an axis. A day/A spin

Answer 1

Rotation

Question 2

spinning around an object or star. A year/A orbit

Answer 2

Revolution

Question 3

Earth-Centred Model. Created to seek accuracy in “perfect” geometry

Answer 3

Geocentric Universe Model

Question 4

Sun-Centred Model. Sun-centered scientific revolution - adoption of new paradigm (accepted scientific ideas/assumptions)

Answer 4

Heliocentric Universe Model

Question 5

List the Planets in order from the sun (8)

Answer 5

1. Mercury
2. Venus
3. Earth
4. Mars
5. Jupiter
6. Saturn
7. Uranus
8. Nepture

Question 6

Earth’s orbit projected on the celestial sphere. The apparent path of the sun around the sky.

Answer 6

Ecliptic

Question 7

Plato the philosopher proposed perfect motion (constant speed, perfect circles). Planets (wanders) was a big problem to this theory.

Answer 7

Uniform Circular Motion

Question 8

planet moves westward for a few months

Answer 8

Retrogade Motion

Question 9

Sir Isaac Newton’s idea of universal theory of gravitation revealed that objects are actually falling into another, as an apple falls to earth. This explains…

Answer 9

Orbital Motion

Question 10

Mercury, Venus, Earth (moon), Mars are…

Answer 10

Terrestial/Inner Planets. Which means they are small in diameter, dense, little or no atmosphere.

Question 11

Jupiter, Saturn, Uranus, and Neptune are…

Answer 11

Jovian/Outer Planets.
Which means they are relatively larger, have no solid surface, “liquid” giants (compressed gas)

Question 12

Larger in size and cooler than the temperature of the planet. It’s important for retaining gases.

Answer 12

Atmosphere

Question 13

Carbon Dioxide (CO2) rich atmosphere traps heat and raises surface temperature

Answer 13

Greenhouse Effect

Question 14

result of small differences in gravitational force of one massive body on another

Answer 14

Tidal Force

Question 15

Boundary beyond which water vapour could freeze to form ice grains

Answer 15

Ice line

Question 16

Tiny, cold, irregular to sphere in shape, growth or captures asteroids that rotate planets (ex. Jupiter has 74 moons)

Answer 16

Satellite System (Moons)

Question 17

Minimum distance of a planet to a satellite that can hold itself together by gravity without tidal forces overcoming it.

Answer 17

Roche Limit

Question 18

Stripes that circle the planet parallel to equator (Jupiter)

Belt- darker descending gas lower in atmosphere
Zone- brighter, rising gas cloud high in atmosphere

Answer 18

Belt-Zone Circulation

Question 19

small bit of matter (dust, sand, pebble, most less than 1 gram) in space

Answer 19

Meteoroid

Question 20

Meteoroid fall that earth’s atmosphere friction heats the surface to incandescent vapour

Answer 20

Meteor

Question 21

Large enough that a portion survives fall through atmosphere and strikes the ground.

Answer 21

Meteorite

Question 22

small rocky world which most orbit the sun between mars and jupiter

Answer 22

Asteroids/Asteroid Belt

Question 23

Collection of Icy Planetstimals orbiting just beyond Neptune

Answer 23

Kupier Belt

Question 24

Small icy body that orbits the sun and produces tails of gas and dust when they approach the Sun

Answer 24

Comet

Question 25

Hypothetical source of distant comets, icy bodies, spherical. It is the edge of the sun’s reach and is one light year big

Answer 25

Oort Cloud

Question 26

space debris incapable of clearning its orbit, many are not spherical, often not on the eclpitic.

Answer 26

Dwarf Planet