Science Terms

5. the acceleration of an object is directly proportional to the net external force applied, and it is indirectly proportional to its mass
6. a carefully thought-out explanation for observations of the natural world that has been constructed using the scientific method, and which brings together many facts and hypotheses.
10. opposes the movement between two contact surfaces that slide against each other
11. a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.
13. a body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.
17. the moving of something from its place or position.
18. is a tendency to do nothing or to remain unchanged.
19. is the strength or energy as an attribute of physical action or movement.

1. the force that acts in the opposite direction to an object moving through the air
2. the resistance that one surface or object encounters when moving over another.
3. the quantity of motion of a moving body, measured as a product of its mass and velocity.
4. for every action (force) in nature there is an equal and opposite reaction
7. a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
8. vehicle's capacity to gain speed within a short time.
9. those that are opposite in direction and equal in size
10. a force that keeps an object at rest
12. is the rate at which someone or something is able to move or operate.
14. the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
15. is the speed of something in a given direction.
16. a force that acts on a body moving in a circular path and is directed toward the center around which the body is moving.