PSSA PSSA Physical Science 2

Question 1

What is the difference between speed and velocity?

Accepted Answer

Speed describes how fast an object moves; velocity includes speed and direction

Answer

Speed is the magnitude of motion (how fast), while velocity is a vector that includes both speed and direction.

Question 2

What does the periodic table organize elements by?

Accepted Answer

Increasing atomic number and similar chemical properties

Answer

The periodic table organizes elements in order of increasing atomic number, with elements in the same column sharing similar chemical properties.

Question 3

Which of the following describes a chemical change?

Accepted Answer

Iron rusting

Answer

Iron rusting is a chemical change because it involves a chemical reaction that creates a new substance (iron oxide).

Question 4

What is the formula for calculating work?

Accepted Answer

Work = Force × Distance

Answer

Work is calculated by multiplying the force applied to an object by the distance the object moves in the direction of the force (W = F × d).

Question 5

What are the three states of matter?

Accepted Answer

Solid, liquid, gas

Answer

The three common states of matter are solid (fixed shape and volume), liquid (fixed volume, variable shape), and gas (variable shape and volume).

PSSA - Pennsylvania System of School Assessment Practice Test