Podcast
Questions and Answers
What is the role of gravity in keeping objects on the surface of the Earth?
What is the role of gravity in keeping objects on the surface of the Earth?
- It has no role in keeping objects on the surface
- It causes every object to be attracted to every other object (correct)
- It creates a repulsive force to keep objects on the surface
- It causes objects to float away as they would in space
What does a gravitational field arrow represent?
What does a gravitational field arrow represent?
- The direction and magnitude of force felt by an object at its location (correct)
- The temperature of the gravitational field
- The distance between two objects in the gravitational field
- The speed of an object in the gravitational field
What determines the strength of the gravitational force between two objects?
What determines the strength of the gravitational force between two objects?
- The speed of each object and the distance between the objects
- The mass of each object and the volume of the objects
- The mass of each object and the distance between the objects (correct)
- The volume of each object and the distance between the objects
What is the role of mass in determining an object's weight?
What is the role of mass in determining an object's weight?
What is the average location of mass in an object called?
What is the average location of mass in an object called?
What is the relationship between gravity and mass according to Newton's universal law of gravitation?
What is the relationship between gravity and mass according to Newton's universal law of gravitation?
What impact does increasing distance between the centers of mass of two objects have on the force of gravity?
What impact does increasing distance between the centers of mass of two objects have on the force of gravity?
What shapes do planets and stars tend to have due to gravity's impact?
What shapes do planets and stars tend to have due to gravity's impact?
Why do moons orbit planets in our solar system?
Why do moons orbit planets in our solar system?
What characteristic leads to a stronger gravitational field in celestial bodies?
What characteristic leads to a stronger gravitational field in celestial bodies?
Flashcards
Role of Gravity
Role of Gravity
Attracts every object to every other object.
Gravitational Field Arrow
Gravitational Field Arrow
Direction and magnitude of gravitational force.
Gravity's Strength
Gravity's Strength
Mass of objects & distance between them.
Mass vs. Weight
Mass vs. Weight
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Center of Mass
Center of Mass
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Gravity and Mass
Gravity and Mass
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Distance and Gravity
Distance and Gravity
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Shape of Planets/Stars
Shape of Planets/Stars
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Moons Orbiting Planets
Moons Orbiting Planets
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Stronger Gravitational Field
Stronger Gravitational Field
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Study Notes
Gravity in Our Solar System
- Acceleration due to gravity has different values on each planet in our solar system
- On Earth, objects in free fall accelerate at approximately 9.8 m/s^2
- Newton's universal law of gravitation states that gravity is directly proportional to mass and inversely proportional to the square of the distance between the centers of mass of two objects
- Objects with small masses have weak gravitational fields, while objects with large masses have strong gravitational fields
- In the early solar system, objects collided frequently, and the process of accretion formed fewer, more massive objects
- The sun has the strongest gravitational field in the solar system, causing planets to orbit around it
- Moons orbit planets due to the planets' stronger gravitational fields
- Planets have gravity because they have mass, and everything with mass has a gravitational field
- The force of gravity decreases drastically with increasing distance between the centers of mass of two objects
- Gravity impacts the shapes of planets and stars, causing them to be roughly spherical due to radial gravitational attraction and increased rotational speed over time
- Radial gravitational attraction results in objects being pulled inward toward the center of mass, leading to spherical shapes
- Planets and stars spin more quickly when their mass is closer to their center of mass, smoothing them into more spherical shapes
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