U11:Vocab & Concepts, Challenge

Front

What happens to the Earth's orbit if the mass of the Sun suddenly increases?

Back

The Earth would begin to move closer to the Sun.

Front

Which planet has the least weight for a student traveling to four different planets?

Back

Planet C.

Front

What is the relationship between the gravitational pull on the Earth and the gravitational force on the Sun?

Back

The forces are equal.

Front

What type of force acts away from the Earth on the Moon, preventing it from falling towards the Earth?

Back

No force.

Front

What is gravity?

Back

A force that attracts two bodies towards each other, proportional to their masses and inversely proportional to the square of the distance between them.

Front

What is the formula for gravitational force?

Back

F = G * (m1 * m2) / r^2, where F is the gravitational force, G is the gravitational constant, m1 and m2 are the masses, and r is the distance between the centers of the two masses.

Front

What is the effect of distance on gravitational force?

Back

Gravitational force decreases as the distance between two objects increases.

Front

What is orbital velocity?

Back

The speed at which an object must travel to maintain a stable orbit around another object.

Front

What is the role of inertia in orbital motion?

Back

Inertia keeps an object moving in a straight line, while gravity pulls it towards the center of the larger body, creating an orbit.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.