Unpacked Content
Scientific and Engineering Practices
Planning and Carrying out Investigations
Crosscutting Concepts
Cause and Effect
Knowledge
Students know:
- Each force acts on one particular object and has both strength and direction.
- An object at rest typically has multiple forces acting on it, but they add to give zero net force on the object.
- Forces that do not sum to zero can cause changes in the object's speed or direction of motion.
- Objects in contact exert forces on each other.
Skills
Students are able to:
- Collaboratively plan an experiment to determine the effects of balanced and unbalanced forces on the motion of an object using one variable at a time.
- Carry out an experiment to determine the effects of balanced and unbalanced forces on the motion of an object using one variable at a time.
- Collect and record data from experiment.
- Describe how the investigation plan addresses the purpose of the investigation.
- Communicate findings graphically.
Understanding
Students understand that:
- Cause and effect relationships provide evidence when investigating balanced and unbalanced forces.
Vocabulary
- Experiment
- Variable
- Motion
- Force (push and pull)
- Balanced forces
- Unbalanced forces
- Cause and effect
- Number
- Size
- Direction
- Position
- Friction
- Air resistance
- Communicate
- Graphically
- Net force
- Sum
