Topic 1: Fundamentals of Physics

Question 1

Accurate meaning

Answer 1

Close to true value

Question 2

Precise meaning

Answer 2

how close measurements of the same item are to each other

Question 3

Random error

Answer 3

When measurement slightly differs from the next

Question 4

How to reduce random error?

Answer 4

Repeat so you can calculate an average and identify anomalies

Question 5

Resolution

Answer 5

The smallest reading a device can detect

Question 6

Uncertainty meaning

Answer 6

we cannot ever measure the exact true value of a quantity

Question 7

Uncertainty equation

Answer 7

Uncertainty= range÷2

Question 8

Extension equation

Answer 8

Extension= stretched length- original length

Question 9

Two types of deformation

Answer 9

Elastic and plastic

Question 10

Elastic deformation

Answer 10

If a material goes back to its original shape

Question 11

Plastic deformation

Answer 11

If the material doesn’t go back to its original shape

Question 12

How can direct proportionality be shown on a graph?

Answer 12

There is a straight line that goes through the origin

Question 13

Direct proportionality

Answer 13

When both factors increase or decrease in the same ratio

Question 14

Non linear relationship

Answer 14

When the line on the graph is curved

Question 15

Linear relationship

Answer 15

When the line is straight through the origin