Physics Grade 11 Textbook Quiz

An observation that does not include numbers.

An observation that includes numbers (a measurement).

A rough guess of a physical quantity using prior knowledge and reasoning.

Estimating a building's height by considering floors, floor height, and a person's height.

Fundamental concepts used in physical reasoning & calculations.

Factors that influence the quantity being estimated.

Helps develop a physical sense and understanding.

Quantitative observation, including numbers.

A textbook designed for Grade 11 Physics students in Pakistan, following the 2022-23 National Curriculum.

Measurable properties of physical objects or systems, like length, mass, and time.

International System of Units: The standard units of measurement in physics.

Units created from combining base SI units, like speed (meters per second).

The official curriculum guidelines for Pakistani schools for the 2022-2023 academic year.

Specific learning goals for students, outlining what they should be able to do after learning a unit or lesson.

Motion in a straight line.

Motion relating to moving in circles.

Estimating the length of an object by breaking it into smaller sections, estimating the length of a smaller section and multiplying it by the number of sections.

Estimating the length of a small object by imagining multiple copies forming a larger object. Estimate the large object and divide by the number of small objects.

Estimating quantities like mass and time using the same strategies used for length, like breaking down large values or aggregating small values.

Utilizing pre-calculated scales for lengths, masses, and time intervals to estimate relative sizes.

Simpler shapes (sphere, box) can be used to model complex objects for estimating area and volume from known length measurements.

To find the overall length of something, you can break it down into smaller sections, estimate the length of one section, then multiply it by the number of sections.

To figure out the size of something small, picture several of them joined together. Estimate the larger object then divide by the number of small parts.

Estimating time intervals using techniques similar to length estimation. Break it down or group many smaller times together.

The qualitative nature of a physical quantity, represented by its base units (like length, mass, and time).

An equation is physically correct only if both sides have the same dimensions. This principle helps check for errors in equations.

The range of possible values within which the true value of a measurement lies. It reflects the precision of the measuring instrument.

Equal to the least count of a measuring instrument, indicating the smallest unit it can measure.

Precision refers to the closeness of multiple measurements to each other, while accuracy refers to how close a measurement is to the true value.

The uncertainty expressed as a percentage of the measured value. It shows how much of the measured value could be uncertain.

The difference between the experimental value and the accepted value, expressed as a percentage of the accepted value. It shows how far off the experiment is from the ideal.

The dimension of the universal gravitational constant (G) is [M⁻¹L³T⁻²].

A method used to check the homogeneity of equations, derive formulas, and determine units by treating dimensions as algebraic quantities.

The principle stating that both sides of a physically correct equation must have the same dimensions.

Using dimensional analysis to find a possible formula for a physical quantity by relating it to other known quantities.

The power of 10 that represents the closest value to a number.

Dimensional analysis cannot distinguish between physical quantities with the same dimensions and doesn't provide information about dimensionless constants.

It states that both sides of an equation representing a physical relationship must have the same dimensions.

By comparing the dimensions of each term on both sides of the equation. If they are the same, the equation is dimensionally correct.

How uncertainty from individual measurements affects the final result of a calculation.

It cannot differentiate between physical quantities with the same dimensions and doesn't determine dimensionless constants.

By analyzing the dependencies of the quantity on other known physical quantities and using their dimensions to determine the relationship.

The fundamental units used to express all other physical quantities. Examples are the meter (m), kilogram (kg), and second (s).