Gravitational, Electric and Magnetic Fields

Front

What is the unit for measuring mass?

Back

Kilograms (kg)

Front

A compass points north because of the Earth's ________ field?

Back

magnetic

Front

You are carrying a lunch tray when you bump into the edge of a table. Although the tray did not tip, your milk falls off of the front of the tray. This illustrates which of Newton's Laws?

Back

Newton's 1st Law of Motion

Front

What is Newton's First Law known as? The Law of

Back

Inertia

Front

Electric fields are usually created when _____ are transferred between objects.

Back

electrons

Front

What is the force of attraction between two masses called?

Back

Gravitational force

Front

What is the formula for calculating gravitational force?

Back

F = G * (m1 * m2) / r^2

Front

What is the direction of electric field lines?

Back

From positive to negative charges

Front

What is the relationship between electric charge and electric field strength?

Back

Electric field strength is directly proportional to the amount of charge.

Front

What is the effect of a magnetic field on a moving charged particle?

Back

It exerts a force perpendicular to the direction of motion.