The Science of Physics
SI Units
Accuracy and Precision
Significant Figures
100
What is Physics?
the study of the physical world, from motion and energy to light and electricity.
100
What is the SI unit for measuring mass?
Kilogram (kg)
100
What is accuracy?
The closeness of a measurement to the target value
100
How many significant figures does the following number have:
0.00204
3
200
What are the steps of the Scientific Method?
Observe
Gather information
Create a hypothesis
Create a controlled experiment
Evaluate
Share conclusions
200
Which of the following is NOT a base unit in the SI system?
a. Candela
b. Kilogram
c. Liter
d. Second
c. Liter
200
What is demonstrated by a set of measurements that are close to each other but far from the target?
Low accuracy, high precision
200
What is 1289 rounded to three significant figures?
1.29x103
300
What are the main branches of physics?
Mechanics
Vibrations and wave phenomena
Electromagnetism
Thermodynamics
Optics
Relativity
Quantum mechanics
300
What is the SI unit for measuring electric current?
Ampere
300
________ is a measure of how close measurements come to each other when they are made in the same way.
Precision
300
Calculate 1.23 m x 0.89 m and give your answer with the correct number of significant figures.
1.1 m2
400
Identify at least two areas of physics in the following situation:
cooling off on a hot day by diving into a swimming pool
Thermodynamics/Mechanics
400
What does SI stand for?
Système International d’Unités
(International System of Units)
400
Student C
400
What is the least number of significant figures in the given values 6.4 x 10-7 C?
2