Physics Basics Quiz

Physical quantities that are fundamental and cannot be defined in terms of other quantities.

A system of measurement used in science. It has seven base units.

Units that are formed by combining the base units through multiplication or division.

The unit of length in the SI system.

The unit of mass in the SI system.

A quantity that is derived from fundamental quantities such as length, mass, and time. It is calculated using a formula that combines these fundamental quantities. For example, area is derived from length and width.

The amount of space a three-dimensional object occupies. It is calculated by multiplying the object's length, width, and height.

A measure of how much matter is packed into a given volume. It is calculated by dividing the mass of an object by its volume.

The rate at which an object changes its position. It is calculated by dividing the total distance traveled by the time it takes to travel that distance.

The rate at which an object changes its velocity. It is calculated by dividing the change in velocity by the time it takes for that change to occur.

The relationship between pressure and volume of a gas, where an increase in one results in a decrease in the other.

A mathematical representation demonstrating the inverse relationship between pressure (P) and volume (V) of a gas, where 'constant' is a fixed value.

A visual representation of the inverse relationship between pressure and volume, showing a downward sloping curve.

If the volume of a gas remains constant, the pressure will also remain constant, resulting in a horizontal line on the graph.

If the pressure of a gas remains constant, the volume will also remain constant, resulting in a vertical line on the graph.

The points on the graph lie on a straight line, indicating a direct proportional relationship between the variables.

The relationship between two quantities is linear when the graph of those quantities forms a straight line.

A shape on a graph that looks like a curve, rising upwards.

The graph of the distance covered by a moving object plotted against time will be a parabola, not a straight line. This means the distance is not increasing at a constant rate but at an accelerating rate.

A relationship where one variable depends on the square of the other.

The change in velocity of an object over a specific time interval.

The area under a velocity-time graph represents the displacement of an object.

The slope of a velocity-time graph gives the acceleration of an object.

The initial velocity is the velocity of an object at the beginning of a time interval.

The final velocity is the velocity of an object at the end of a time interval.

A quantity that has both magnitude and direction.

A quantity that has only magnitude.

The sum of two or more vectors.

A system of reference used to describe the location of objects or events. In one dimension, it is simply a line with a point called origin.

Graphical method for finding the resultant vector of two vectors. You can move vectors parallel to themselves, forming a triangle.

Breaking down a vector into its horizontal and vertical components.

The length of the vector, found using the Pythagorean theorem: c^2 = a^2 + b^2.

The angle of the vector, found using the tangent function: tan(θ) = opposite / adjacent.

Using the Pythagorean theorem and the tangent function to find the magnitude and direction of a vector.

The total length traveled by an object.

The change in position of an object, represented by a straight line from the initial position to the final position.

The total displacement divided by the time it took for the displacement to occur.

The final position minus the initial position.

The SI unit for displacement and distance.

A quantity that has both magnitude (size) and direction.

The horizontal (x) and vertical (y) parts of a vector.

A triangle with one angle measuring 90 degrees.

The longest side of a right triangle.

The ratio of the length of the opposite side to the length of the hypotenuse in a right triangle.

Vectors can be added graphically by placing the tail of one vector at the tip of the other vector. The resultant vector is then drawn from the tail of the first vector to the tip of the last vector.

A vector's direction and magnitude remain unchanged when moved parallel to its initial position, allowing for easier addition.

Vectors can be added in any order, meaning that the final resultant vector is the same regardless of the order of addition.

To subtract a vector, you simply add its opposite vector. This means reversing the original vector's direction.

Multiplying a vector by a scalar (a number) changes the vector's magnitude, but not its direction.