Chapter 1 Physics quiz

What is physics?

• Physics is the study of matter, energy, and the interactions between them.
• Physics is the study of historical events.
• Physics is the exploration of human behavior.
• Physics is the analysis of artistic expressions.

What are the various aspects related to physics?

• Biology, chemistry, geology
• Astrophysics, meteorology, psychology
• Mechanics, thermodynamics, electromagnetism, optics, quantum mechanics, relativity, atomic physics
• Sociology, anthropology, history

A model is a ______ to help understand a _______

• detailed explanation; simple concept
• visual aid; theoretical framework
• abstract idea; tangible object
• analogy; phenomena

A theory is a more broad and detailed than a model, it gives _______

• visual representations of data
• simple descriptions of concepts
• quantitatively testable results

• narrow predictions for specific cases

We test theories by using _______

• experiments
• conclusions
• observations
• hypotheses

A law is a concise but general statement about how ______________

• the universe expands
• gravity pulls objects together
• light travels in waves
• nature behaves

What is precision?

• Precision is describes the reproducibility pf measurements

• Precision is the ratio of true negatives to false positives.
• Precision is the total number of true positives.
• Precision measures the overall accuracy of a model.

What is accuracy?

• Accuracy is how closed a measurement is expected value

• Accuracy is the total number of attempts made.
• Accuracy refers to the speed of a process.
• Accuracy is the average of all results obtained.

What is resolution?

• Resolution is the smallest amount of change a measurement device can clearly display.

• Resolution is the color depth of an image.
• Resolution is the brightness level of an image.
• Resolution refers to the size of a file in megabytes.

What are the SI units for length?

• kilometer
• meter
• millimeter
• centimeter