force and motion worksheet

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Across
  1. 3. A controlled procedure carried out to test a hypothesis or verify a scientific theory. Experiments involve manipulating variables and measuring their effects.
  2. 5. force: A force directed towards the center of rotation for circular motion. It keeps objects moving in a curved path.
  3. 7. The force of attraction between two objects with mass. It is responsible for the weight of an object on or near the surface of a planet.
  4. 10. friction: The force that prevents relative motion between two surfaces when they are not moving past each other.
  5. 11. A push or pull on an object that can cause it to accelerate, decelerate, or change direction. It is measured in Newtons (N).
  6. 12. force: Forces that are equal in magnitude and opposite in direction, resulting in no change in the object's motion.
  7. 14. second Law of Motion: States that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F = ma).
  8. 17. The rate at which an object changes its displacement over time. Velocity is also a vector quantity as it has both magnitude (speed) and direction.
  9. 18. Method: A systematic approach used by scientists to investigate natural phenomena, involving observation, hypothesis formulation, experimentation, data collection, analysis, and conclusion drawing.
  10. 19. The product of an object's mass and velocity. Momentum is a vector quantity that represents the amount of motion possessed by an object.
Down
  1. 1. The tendency of an object to resist any change in its motion. It is related to an object's mass, where objects with greater mass have greater inertia.
  2. 2. The change in position of an object from its initial point to its final point. Displacement is also a vector quantity as it includes both magnitude and direction.
  3. 4. The force that opposes the relative motion between two surfaces in contact. Friction can be either static (when there is no movement between the surfaces) or sliding (when there is relative motion between them).
  4. 6. resistance: The frictional force experienced by objects moving through the air. It opposes the motion of the object and depends on factors such as shape, size, and speed.
  5. 8. The rate at which an object changes its velocity over time. It is a vector quantity, meaning it has both magnitude (speed) and direction.
  6. 9. The force exerted by gravity on an object with mass. Weight depends on both mass and gravitational acceleration.
  7. 10. Theory: An explanation based on extensive evidence and repeated experimentation that describes how and why certain phenomena occur in nature. Scientific theories are well-established explanations that have stood up to scrutiny and are supported by multiple lines of evidence.
  8. 13. The distance traveled by an object per unit of time. Unlike velocity, speed does not consider direction and is therefore a scalar quantity.
  9. 15. friction: The force opposing the motion between two surfaces when one surface slides over another.
  10. 16. third Law of Motion: States that for every action, there is an equal and opposite reaction. This means that if one object exerts a force on another object, the second object exerts an equal but opposite force on the first object.