Grade 07 Science - EC: S7.C.3.1.2
Grade 07 Science - EC: S7.C.3.1.2
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 friction?
- What is gravity?
- Explain the forces that keep the moon in orbit around the Earth. Are these forces balanced or unbalanced?
- A wagon rolls down a small hill. There is a ball inside the wagon. At the bottom of the hill, the wagon hits a large rock. Write a paragraph to explain the different forces that are acting on the wagon and the ball and how their velocities change based on these forces.
Answer Key/Rubric
- Friction is a force that resists motion between two surfaces that are touching.
- Gravity is the force object exert on each other due to their masses.
- Acceptable responses may include, but are not limited to:
- Newton’s third law of motion states that 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.
- The Earth exerts a force on the moon.
- The moon exerts a force on the Earth.
- The forces between the Earth and the moon are balanced.
- Centripetal force is any force that keeps an object moving in a circle.
- Centripetal force helps keep the moon in orbit around the Earth.
- Gravity also helps keep the moon in orbit around the Earth.
- Acceptable responses may include, but are not limited to:
- Gravity pulls the wagon down the hill.
- The wagon will accelerate as it rolls down the hill.
- The ball and the wagon will have the same velocity and acceleration as they roll down the hill.
- When the wagon hits the rock, the wagon will stop. Its velocity will be zero.
- The ball will fly out of the wagon due to its inertia.
- Eventually, the ball will hit the ground because gravity will pull it down.
- Friction will stop the ball from rolling.
- Its velocity will decrease until it reaches zero.