Physics lesson number 1 Flashcards
When, where and who were the first to measure the size of the earth?
it was measured by Eratosthenes in Egypt on about 235 BC
How was the size of earth measured
By following the sun and observing the shadows during daytime
Who calculated the moon’s diameter and its distance from earth
Aristarchus (240 BC)
How did Aristarchus determined the size of the moon
He watched the moon’s eclipse and measured its diameter by comparing it with the earth’s diameter
How was the distance to the moon determined
By taping a dime to a window and viewing it with one eye
What is the sun and moon’s diameter/distance from earth
110
What is a close agreement by competent observers about the same phenomenon called
Fact
A hypothesis that has been tested over and over again and has not been contradicted is called?
A law or principle
It is a synthesis of a large body of information that encompasses well tested and verified hypotheses
Theory
What are the two types of motion according to Aristotle
Natural motion and Violent motion
This is called fake science
Pseudoscience
A motion that goes up and down is what type of motion accrdng to Aristotle
Natural motion
A motion that is push or pull or caused by an imposed motion is called what accrdng to Aristotle?
violent motion
What is the gravity of earth
9.8 m/s (square)
Who is the philosopher that said positive = positive
Aristotle
