Studied by 6 people

5.0(1)

get a hint

hint

Looks like no one added any tags here yet for you.

1

what are the 3 stages of when i scientist comes up with a hypothesis ?

the scientist tests it

then multiple scientists will test it

if all the evidence supports it the hypothesis is accepted for now

New cards

2

what is the independant variable

the variable that changes

New cards

3

What is the dependant variable

the variable that is measured

New cards

4

what is the control variable

the variable that stays the same

New cards

5

What makes evidence valid ?

it has to be repeatable

it has to be repoducable

New cards

6

What is accurate data ?

data that is close to the true answer

New cards

7

What is precise data ?

when the data collected are all very close to each other and the mean

New cards

8

What is a random error ?

unpredicatbale differences in things such as human error and measuring.

New cards

9

What is a systematic error?

when a measurement is wrong by the same amount every time

repeating the experiment the exact same way will not correct it

New cards

10

What is a zero error ?

when equipment is not set to zero and has a reading before use

New cards

11

How can you solve a zero error ?

by noting the initial measurement and subtracting it from all your results at the end

New cards

12

What do you do with anomolous results

yu can ignore it when processing the results (e.g., a mean)

New cards

13

Define:

mean

median

mode

mean - add all numbers together and divide by how many results

median - righting the numbers in numerical order and finding the middle number

mode - find the value that occurs the most freuqent

New cards

14

how do you present categorical data ?

in a bar chart

New cards

15

how do present continuous data

in a line graph

New cards

16

What axis does the dependant variable go on ?

What axis does the independant variable go on ?

dependant - y axis

independant - x axis

New cards

17

How do you find out the gradient ?

change in y/ change in x

New cards

18

How do you find the gradient of a point on a curve ?

draw a tangent from that point on the curve and find out the gradient of the tangent

New cards

19

What does this graph show ?

Positive corrolation

New cards

20

What does this graph show ?

Negative corrolation

New cards

21

What does this graph show ?

No corrolation

New cards

22

What is the multiple unit for tera ?

1 x 10^12

New cards

23

What is the multiple unit for giga ?

1 x 10^9

New cards

24

What is the multiple unit for mega ?

1 x 10^6

New cards

25

What is the multiple unit for kilo ?

1 x 10^3

New cards

26

What is the multiple unit for deci ?

1 x 10^-1

New cards

27

What is the multiple unit for centi ?

1 x 10^-2

New cards

28

What is the multiple unit for milli ?

1 x 10^-3

New cards

29

What is the multiple unit for micro ? (μ)

1 x 10^-6

New cards

30

What is the multiple unit for nano ? (n)

1 x 10^-9

New cards

31

What do you do if you are going from a smaller to bigger unit ?

divide

New cards

32

What do you do if you are going from a bigger to smaller unit ?

multiply

New cards

33

how dyou figure out the uncertainty ?

range/2

New cards

34

What should yo include in a scientific evaluation ?

is the method valid and a fair test

quality of the results (repeatable, repoducable, accurate,precise)

were there any anomolous results and which error caused them

comment on the uncertainty

suggest any changes to the method to omprove the quality of the results

New cards