Grade 07 Science - EC: S7.C.3.1.1
Grade 07 Science - EC: S7.C.3.1.1
Continuum of Activities
The list below represents a continuum of activities: resources categorized by Standard/Eligible Content that teachers may use to move students toward proficiency. Using LEA curriculum and available materials and resources, teachers can customize the activity statements/questions for classroom use.
This continuum of activities offers:
- Instructional activities designed to be integrated into planned lessons
- Questions/activities that grow in complexity
- Opportunities for differentiation for each student’s level of performance
Grade Levels
7th Grade
Course, Subject
Science
Related Academic Standards / Eligible Content
Activities
- What is velocity?
- List Sir Isaac Newton’s three laws of motion.
- What is inertia? How is it related to unbalanced forces?
- During a soccer game, Carey kicks the ball toward the goal. A defensive player stops the ball and kicks it in the opposite direction. Describe the forces that the players have applied to the soccer ball and how they affected its velocity.
Answer Key/Rubric
- Velocity is an object’s speed in a specific direction.
- Newton’s three laws of motion state:
- Objects at rest remain at rest, and objects in motion remain in motion with the same velocity, unless acted upon by an unbalanced force.
- The acceleration of an object increases with increased force and decreases with increased mass. The direction in which the object accelerates is the same as the direction of the force. (F=ma)
- Every time one object exerts a force on another object, the second object exerts a force that is equal in size and opposite in direction back on the first object.
- Acceptable responses may include, but are not limited to:
- Inertia is an object’s resistance to a change in speed or direction of its motion.
- Newton’s first law states that objects at rest remain at rest, and objects in motion remain in motion with the same velocity, unless acted upon by an unbalanced force.
- If an object is acted on by an unbalanced force, its inertia will resist the change in speed or direction.
- The object’s inertia will play a role in how the object is affected by the unbalanced force.
- Acceptable responses may include, but are not limited to:
- Carey dribbled the ball down the field. She applied small forces to kick it back and forth in front of her. She changed the velocity of the ball because she changed its direction.
- She applied a large force to kick the ball into the goal. According to Newton’s second law, the ball accelerated with the unbalanced force in the direction that the force was applied.
- The defender stopped the ball with an unbalanced force. This changed the ball’s velocity and acceleration to zero.
- According to Newton’s third law, the defender applied a force to stop the ball, and the ball applied an equal and opposite force on the defender.
- Then the defender kicked the ball in the opposite direction. She applied an unbalanced force which increased the velocity of the ball in the opposite direction.
- The ball will travel in the direction that the unbalanced force was applied.
