Term
| Which Law states that a body in motion tends to travel in a straight line unless it is disturbed by an unbalanced force? |
|
Definition
|
|
Term
| If two forces are of equal magnitude (size) and opposite in direction, then the forces are ..... |
|
Definition
|
|
Term
| Any two objects, from the largest galaxy down to the smallest particles, attract each other with a force called .... |
|
Definition
|
|
Term
| Unbalanced forces, including gravity, can change the ______________________ of an object's motion. |
|
Definition
|
|
Term
| Describe the path of something that has forward motion but is also being pulled down by gravity. |
|
Definition
|
|
Term
| Planets are kept in orbit by the forces of inertia and the Sun's gravity. What would happen to the planets if the Sun's gravity disappeared? |
|
Definition
| The planets would move off into space in a straight path. |
|
|
Term
| The inner planets in the solar system have the fastest orbital speeds. Why? |
|
Definition
| The inner planets are closer to the Sun, so the Sun's gavity is stonger which means the planets must move faster to stay in orbit. |
|
|
Term
| What causes Stars to wobble? |
|
Definition
| The gravity of planets pulling on the star. |
|
|
Term
| The faster the satellite or orbiter's orbital speed, the more _____________ the planet it is orbiting. |
|
Definition
|
|
Term
| If an egg falls out of a bird nest sitting on a tree branch, when does gravity act on the egg? |
|
Definition
| At all times, even when sitting in the nest. |
|
|
Term
| The Law of Universal Gravitation states that any two objects attract each other. What two factors determines how much they attract each other? |
|
Definition
| the mass of the each object and the distance between them. |
|
|
