GED Sample Questions: Physical Science Questions - dummies

# GED Sample Questions: Physical Science Questions

When you reach the Science portion of the GED, you will be expected to have a general knowledge in all branches of Science, including physical Science. Here is an example of the type of questions you may encounter on test day.

Velocity and Speed

There is a difference between speed and velocity, though sometimes you see the words used interchangeably. The velocity of a body is its rate of motion in a specific direction, such as a bicycle traveling 34 miles per hour due east. Because velocity has both magnitude (34 miles per hour) and direction (due east), it can be represented by a vector.

Speed has a magnitude only. If a bicycle travels at a speed of 28 miles per hour, you know its magnitude (28 miles per hour) but not its direction. Because speed has a magnitude but not a direction, it can be represented as a scalar.

1. If force is defined as that which is required to change the state or motion of an object in magnitude and direction, how should it be represented?

• (A)wavy lines

• (B)straight line

• (C)scalar

• (D)vector

2. A GPS is a device that shows you your position on Earth and can give you directions to get to another location on Earth. The directions given by a GPS are really in the form of ___________.