Y9 - Scientific Keywords

Question 1

Accuracy

Answer 1

How close a result comes to the true value.

High accuracy = Bullseye
Low accuracy = Doesn’t hit the target

Question 2

Precision

Answer 2

How consistently can you come to the same result

High precision = All shots hit bullseye
Low precision = One shot ends up in each continent, somehow

Question 3

Fair Test

Answer 3

Are the results of your test unaffected by any variables outside of the one being tested

Fair test = Every time the result is tested it is done in the exact same conditions as the previous test
Unfair Test = Every test you chose a random country with a random wind speed with a 2% chance that the test must be done during and earthquake or in the middle of the closest sea if the country does not get earthquakes

Question 4

Repeatability

Answer 4

Can the same person get the same or similar results under the same conditions

Repeatable = All 1,000,000,000 tests got the exact same answer when I did it
Not Repeatable = When I did the test 1,000,000,000 times every time it was between 368m-5679m off of the last result

Question 5

Reproducibility

Answer 5

Another person gets the same or similar results under the same conditions

Reproducible = The entirety of Earth’s population

Question 6

Validity

Answer 6

Does your evidence actually answer your question

Valid = I wanted to know the difference in gravity from the Earth to the Moon so I tested 100 objects falling speed from the same height on both celestial bodies
Invalid = I wanted to know the difference in gravity from the Earth to the Moon so I decided to work at Subway