Name:
Year 7
Working as a Scientist Revision
The following questions will help you revise and study for you end of topic test
1. Laboratory Equipment:
a) Write the names of the following laboratory equipment below.
Name:
Name:
b) Identify the value on each of the measuring cylinders below?
c)
Name:
2. Lab Safety:
Write a brief reason under the following as to why it is important in regards to safety.
1.
Don't enter the laboratory unless your teacher is present.
_________________________________________________________________________________
2.
Be sure you know where the safety stations are in the room.
_________________________________________________________________________________
3.
Behave sensibly in class:
i.
Listen carefully to your teacher’s instructions.
_________________________________________________________________________________
ii.
Don’t run.
_________________________________________________________________________________
iii.
Don't be silly with equipment or experiments.
_________________________________________________________________________________
4.
Take special care when heating: wear safety glasses, tie back long hair and turn Bunsen
burners off when they are not being used.
_________________________________________________________________________________
5.
Report any damage.
_________________________________________________________________________________
6.
Know where to dispose of broken glass.
_________________________________________________________________________________
7.
Safely position equipment in your work area.
_________________________________________________________________________________
8.
Don't interfere with the experiments of other groups.
_________________________________________________________________________________
9.
Care for laboratory plants and animals.
_________________________________________________________________________________
10.
Clean up any spills.
_________________________________________________________________________________
Name:
Words
3. a) Experimental Procedure
1
a) Match the following words with their definitions
2
1
Independent variable:
3
2
Dependent Variable
3
Control Variable
4
Aim
5
Hypothesis
6
Method
7
Observation
8
8
Inference
9
9
Prediction
10
10
Mass
11
Experimental Error
12
Mean
Definitions
4
5
6
7
11
12
a) A statement based on something one has seen, heard, or noticed
b) A measure of the amount of matter in an object
c) Errors that may occur in the execution of an experiment, for example, human error
d) A careful and organised plan that controls the way something is done
e) The variables that are kept to the same during an experiment to ensure a fair test
f) The main purpose/design of an experiment
g) The variable that is measured during an experiment
h) A conclusion reached on the basis of evidence and reasoning
i) The variable that is changed in an experiment
j) The average of a set of numbers
k) A proposed explanation made on the basis of limited evidence as a starting point for further
investigation
l) A statement about what will happen of might happen in the future
Name:
b) Identify whether each of the following is an observation, inference, or a prediction
The man appeared to be hurt: __________________________
The motorcycle was loud:
__________________________
It will likely rain tomorrow:
__________________________
The Earth will be much hotter in 100 years:
The KFC store smelled like chicken:
The carpet was soft:
__________________________
__________________________
__________________________
There were bubbles in the water:
__________________________
The water was boiling: __________________________
Someone must have left the back door open:
__________________________
c) Mr Forte loves his steak, but didn’t know how long it took for his steak to reach each level of
‘doneness’. Mr Forte wanted to therefore find the time taken to reach each stage of
‘doneness’ as an experiment. He the steaks he cooked and listed his observations below:
Level of ‘Doneness’
Rare
Medium Rare
Medium
Medium Well Done
Well Done
Time taken to cook (minutes)
10
12
14
16
18
1. What was the aim of the experiment?
_________________________________________________________________________________
2. Write a possible hypothesis that Mr Forte may have been testing:
_________________________________________________________________________________
_________________________________________________________________________________
3. What was the independent (changed/tested) variable in the experiment?
_________________________________________________________________________________
4. What was the dependent (recorded variable) in the experiment?
_________________________________________________________________________________
Name:
5. What would Mr Forte need to control in order to make the experiment a fair test?
_________________________________________________________________________________
_________________________________________________________________________________
6. Draw a graph of Mr Forte’s results:
Name:
7. What conclusion can you make about this experiment; do you notice any patterns in the
data?
_________________________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
8. How could Mr Forte improve his experiment if he were to redo it?
_________________________________________________________________________________
_________________________________________________________________________________
_________________________________________________________________________________
4. Maths in Science
a) Calculate the averages for the following experiment
Type of Fishing
Line
Mono
Braid
Fluorocarbon
Amount of mass
until it snaps (kg)
Trial 1
10
12.1
11.6
Amount of mass
until it snaps (kg)
Trial 2
10.5
11.9
11.5
Amount of mass
until it snaps (kg)
Trial 3
10.3
12.1
11.7
Average