Materials, Forces and Kepler's Laws

Question 1

Asteroids

Answer 1

Asteroids are large rock objects that orbit the sun and more mostly found in the Asteroid belt between Mars and Jupiter.

Question 2

Comets

Answer 2

A comet is a chunk of dust and ice that orbits the sun and becomes vaporized when it moves too close.

Question 3

Meteoroids

Answer 3

Meteoroids are asteroids that are smaller than a few hundred kilometers in diameter and can be the size of a grain of sand.

Question 4

Meteor

Answer 4

A meteor is a meteoroid that strikes the Earth’s atmosphere

Question 5

Meteorite

Answer 5

A meteorite is a meteor that hits the ground.

Question 6

Force of Gravity

Answer 6

Gravity is the weakest force and it holds massive objects together.

Question 7

Strong Nuclear Force

Answer 7

The strong nuclear force is the strongest force but it is very small. It holds the nucleus (protons and neutrons) together.

Question 8

Weak Nuclear Force

Answer 8

The weak Nuclear Force is the interactions between subatomic particles and is responsible for radioactive decay.

Question 9

Electromagnetic Force

Answer 9

Electromagnetic Force holds objects of opposite charges together.

Question 10

Newton’s Law of Gravitation

Answer 10

1. Every particle attracts another particle in the universe
2. The farther away the objects are from each other, the less attractive force
3. The bigger the mass of the object the more likely you are to orbit.

Question 11

Kepler’s Laws

Answer 11

Govern how planets move as they orbit their star.

Question 12

Kepler’s Law of Orbits (1)

Answer 12

All planets orbit their star in an elliptical orbit, not circular. In our time we have only seen elliptical orbits.

Question 13

Kepler’s Law of Areas (2)

Answer 13

When planets reach their perihelion they speed up and when they reach their aphelion they slow down

Question 14

Kepler’s Law of Periods (3)

Answer 14

A planet’s period of orbit is proportional to how far they are from the sun