Date : November___, 2022
Uzbekistan Presidential Schools
Cambridge Secondary 1
End of Term 1 Exam
Question Paper
Science Set A
Grade 6 (Stage 8)
Name : ……………………………………………………….………
Class : ……………………………………………………….………
Duration: 1 hour and 30 minutes
Additional materials: Dark blue pen
HB pencil
Ruler
Eraser
READ THESE INSTRUCTIONS FIRST
Answer all questions in the spaces provided on the question paper.
Use a black or dark blue pen. You may use an HB pencil for any
diagrams or graphs.
Do not use an erasable pen or correction fluid.
Cambridge
Secondary 1
For Teacher’s Use
Question
Section A
1
2
3
4
5
6
7
8
9
10
11
12
13
Section B
14
15
16
17
18
You should show all your working on the question paper.
The number of marks is given in brackets [ ] at the end of each question
or part question.
The total number of marks for this paper is 60.
This paper consists of 16 pages including the cover page.
Total
Mark
2
Section A [40 Marks]
1. When we breathe in, oxygen travels from the air to the blood.
Oxygen passes through these structures.
alveolus
bronchiole
bronchus
nose
trachea
These structures are not in the correct order.
Complete the diagram by writing the names of each structure that oxygen passes through in
the correct order.
Nose
Trachea
Bronchus
Bronchiole
Alveolus
[3]
2. Yuri is exercising.
(a) Which process releases energy in Yuri’s muscles when he exercises?
Circle the correct answer.
movement
nutrition
perspiration
respiration
[1]
3
(b) Complete the word equation for this process.
Glucose
Carbon
Water
dioxide
3. Priya is using an analogy to learn about an organ system.
(a) Circle the correct organ system the analogy represents.
reproductive
nervous
respiratory
circulatory
excretory
[1]
(b) What is meant by the word analogy?
Model of something
__________________________________________________________________
[1]
(c) Write down one way Priya uses the analogy to learn about the organ system.
Rubber sheet - diaphragm, ballons - lungs, bottle - rib cage and the air way - trachea
___________________________________________________________________
[1]
4. Safia uses a microscope to study a sample of blood from a healthy person.
Look at the view from the microscope.
(a) Write down the function of cell A.
Carries oxygen and carry out CO2
______________________________________________________________
[1]
4
(b) When a person has an infection the number of white blood cells increases rapidly.
Explain why this happens.
For remove the infection they increase very fast, if they be slower infection may spread everywhere
_____________________________________________________________
[2]
(c)
(i) What is the name of the liquid part of blood?
Plasma
____________________________________________________________
[1]
(ii) Write down one substance that is transported by the liquid part of blood.
Water
______________________________________________________________________
[1]
5. Mike investigates some sugar solutions.
He dissolves different masses of sugar in different volumes of water.
Look at his results.
(a) Calculate the concentration of sugar in solution C in g / 100 cm3.
26
concentration = ------------------------------------------g / 100 cm3
[1]
(b) Which solution has the fewest sugar particles in 100 cm 3 of the solution?
A
__________________________________
Explain your answer using information from the table.
A - 10.5, B - 26, C - 26, D - 42
________________________________________________________________________
so A is lowest
_________________________________________________________________________
[2]
5
6. Mike investigates the coloured dyes used to make a food colouring.
He:
•
uses paper chromatography
•
draws a start line in pencil on the chromatography paper
•
places a dot of food colouring on the start line
•
places dots of pure dyes on the start line
•
puts the chromatography paper in the solvent as shown in the diagram
•
waits until the solvent has soaked up the chromatography paper.
Look at Mike’s chromatogram.
(a) Mike puts his food colouring and the pure dyes on a pencil line rather than a line drawn
in ink.
Explain why.
It helps to know which color come first or to know the color started
_________________________________________________________________________
__________________________________________________________________________
[1]
6
(b) Paper chromatography separates the colours in the food colouring.
Describe how.
Paper chromatography
separates colours by using a liquid to carry them up paper. Some colours move far,
_____________________________________________________________________
others stay close.
[1]
(c) Which coloured dyes are present in the food colouring?
Explain your answer.
Yellow and green
______________________________________________________________________
[2]
7. Chen opens a bottle of liquid perfume.
After a few seconds he can smell the perfume.
Some of the liquid perfume evaporates into a gas.
The perfume gas then diffuses.
What happens to the particles of perfume during diffusion?
Tick (/) the correct box.
The particles have less energy.
The particles move closer together.
The particles move more slowly.
The particles spread out.
8. Blessy investigates floating objects.
She uses a small plastic box in a bowl of water.
[1]
7
She puts weights into the box.
She measures the depth of the box below the water.
(a) Blessy needs to measure the weights in the box.
What piece of equipment should she use?
Tick (/) the correct box.
(b) Blessy needs to measure the depth (how deep) of the box below the water.
What piece of equipment should she use?
Tick (/) the correct box.
9. Aiko has a beach ball which is filled with air.
She sits on the ball and compresses it.
No air comes out of the ball.
8
(a) Complete the sentences to describe the changes to the air inside the ball.
Choose from the word list.
Each word can be used once, more than once or not at all.
increases
decreases
stays the same
inceases
When she sits on the ball the mass of air inside it .........................................................
.
Increases
When she sits on the ball the pressure inside it ............................................................
.
Stay the same
When she sits on the ball the volume (space) of air inside it ........................................
. [3]
(b) This is the equation of
Describe the relationship between area and pressure.
If area gets big less pressure, else more pressure
……………………………………………………………………………………………………. [1]
10. Lily is in a lesson just before lunch. She is hungry and can smell the food cooking in the
school kitchen.
9
Because in hot temperature particles move faster so it comes faster, in cold particles move slowly so
…………………………………………………………………………………………………………………
SLOW
…………………………………………………………………………………………………………………
………………………………………………………………………………………………………….
[2]
11. (a) Some changes of state of sodium are shown.
Give the names of the changes of state represented by R and S.
Freezing
R .............................................................................................................................................
Boiling
S .............................................................................................................................................
[2]
(b)The changes that occur when a substance changes state are shown below.
Which process, W, X, Y or Z, is occurring in the following four situations?
1 Butter melts on a warm day. W
2 Water condenses on a cold surface.
Y
3 The volume of liquid ethanol in an open beaker reduces.
4 Ice forms inside a freezer.
Z
X
10
Tick (/) the correct box.
12. (a) A sugar cube is dropped into a hot cup of tea.
The tea is not stirred.
Which statement explains why the tea becomes sweet?
Tick (/) the correct box.
[
[1]
(b) Which two processes must happen to spread the sugar evenly in the tea?
11
13. Some students carried out the experiment shown in the diagram.
X
Y
Give the two methods of separation used by the students in the diagram.
filtration
X --------------------------------------------------------------------------------------------------------evaporation
Y ---------------------------------------------------------------------------------------------------------
[2]
12
Section B [20 Marks]
14.
Molecules
Direction
It starts moving everywhere so molecules move freely it cause to cool down
13
15. Look at the diagram of the respiratory system below.
Oxygen
Carbon dioxide
14
16. The diagram shows part of the human respiratory system.
(a) (i) The structures labelled X and Y change the volume of the lungs during breathing.
Name the structures X and Y.
Rib cage
X is ……………………………………………………………………………………………………
diaphragm
Y is ……………………………………………………………………………………………………
[2]
(ii) Describe how structures X and Y move to increase the volume of the lungs.
When we breathe in the diaphragm and rib cage gets big for entering oxygen so it gets big
……………………………………………………………………………………………………….[2]
(b) Mike and Rajiv plan an investigation to find out how running speed affects breathing
rate.
(i) Name the equipment they must use to measure their breathing rate.
Stopwatch
……………………………………………………………………………………………………….[1]
(ii) State one variable they need to change.
Running speed
……………………………………………………………………………………………………….[1]
(iii) State one variable they need to keep the same.
Duration of running
……………………………………………………………………………………………………….[1]
(iv) Suggest one way they record and present their results.
Table or graph
……………………………………………………………………………………………………….[1]
15
17. Ahmed investigates the solubility of potassium nitrate (salt) in water at different temperatures.
Look at his results.
(a) Plot Ahmed’s results on the grid.
Two points have been done for you.
Draw the curve of best fit through the points.
[2]
(b) Complete the sentence.
As the temperature increases, the solubility of potassium nitrate in water
Increase
……………………………………………………………………………………………………. . [1]
16
18.
They collide with each other and it makes gas pressure
In large space, less pressure. Because they collide less in large space.
[1]
END OF THE PAPER