science test 5-7 2000 Paper 1
The diagram shows an oak tree.
An oak tree takes in water and oxygen from the soil.
Name one other type of substance an oak tree needs to take in from
The roots of an oak tree are long and split into many smaller roots.
How does this help the tree to absorb water?
By the time winter comes, the oak tree has lost its leaves. Explain why
this stops the growth of an oak tree.
The drawing shows a caterpillar of a moth called the Oak Beauty.
These caterpillars feed on oak leaves and woodland birds eat them.
Describe how the appearance of the caterpillar can help it to survive.
maximum 5 marks
large amounts of alcohol every day can damage the liver.
The type of damage is called cirrhosis, and it can kill a person quickly.
The graph below shows the number of people dying from cirrhosis of the
liver, in paris, between 1935 and 1965.
During which period of time, P, Q, R, S or T, was it difficult to get
is a drug. Which property makes
alcohol a drug?
Choose the correct sentence:
It is soluble in water
It is a chemical
It can provide energy
It affects the nervous system
at the graph below.
the graph, describe how increasing the amount of alcohol in the blood affects
the chance of having an accident.
of the following statements could be used to explain why alcohol in the blood
could cause accidents?
Choose the correct sentence:
Alcohol cools down the body
increases the time the a person takes to react
Alcohol is a stimulant
Alcohol makes a person happy
The drawings show some plant and animal cells. Each cell has a different
the name of cell C.
main functions of two of the cells are listed below.
Choose the letter of the correct cell next to each function.
(ii) movement of mucus
Give the name of the organ where cell E is produced.
(ii) Give the name of the part of a plant where cell B is found.
Some roads are made of concrete. The concrete is laid in sections with
small gaps between them.
What happens to the size of most objects when they get hotter?
the temperature rises, what will happen to the gaps between the concrete sections?
(iii) When the temperature rises, what might happen
to the sections of concrete if there are no gaps between them?
gaps between the concrete sections are filled with tar. The tar
becomes soft when it is warm.
Why is it important that the tar becomes soft?
maximum 4 marks
picked yellow, red and purple primula flowers from his garden.
He dipped the
different flower petals into water and into two different solutions.
The pH of one
solution was 1 and the pH of the other was 10.
The table shows
Which colour of flower petal would be most useful to make an indicator
for both acids and alkalis? Explain your answer.
Sunil crushed petals from each flower separately in some liquid and
poured off the coloured solutions.
Then he put drops of each coloured solution into the middle of different
pieces of filter paper.
The solutions spread out on the filter paper. The diagrams show his
is the name of this method of investigating coloured substances?
made notes on his experiment. Some words are missing. Complete the sentences.
When I crushed a flower in a liquid it produced a coloured solution.
This is because a coloured substance had
liquid. This shows that the liquid is a
My experiment shows that one of the flowers probably contained two
coloured substances. This was the
maximum 6 marks
The table contains information about five metals, A, B, C, D and E.
(a) Use the
information in the table to arrange the metals in order of reactivity.
Which metal in the table could be copper?
metal in the table could be sodium?
Which metal in the table could be iron?
Sophie places a coin at the bottom of an empty mug. She cannot see the
coin with her eye in the position shown.
fills the mug with water. Her head is in the same position as before, but now
she can see part of the coin.
Draw a ray of light on the diagram to show how Sophie can see part of the
coin. Use a ruler. Draw an arrow on the ray to show its direction.
Sophie pours some concentrated blackcurrant juice into the water. The
blackcurrant drink acts like a red filter and makes the coin look red.
Explain how a red filter works.
The drawing shows a boy with a bow and arrow. He is holding the arrow
and pulling it back.
Two horizontal forces act on the arrow. These are the force exerted by
the boy's hand and the force exerted by the string. The arrow is not moving.
The boy pulls the arrow with a force of 150 N. What is the size of the
force exerted by the string on the arrow?
the boy lets go of the arrow, it starts to move forward. Explain why it starts
arrow flies across a field and hits a target.
Two forces act on the arrow while it is in the air. Air resistance acts
in the opposite direction to the movement, and gravity acts downwards. These two
forces cannot balance each other,
even when they are the same size. Why is this?
arrow has a sharp pointed end. When the arrow hits the target,
the sharp point exerts a very large pressure on the target.
Why does a sharp pointed end exert a larger pressure than a blunt end?
The table below gives information about the planets of the Solar System.
They are listed in alphabetical order.
(Data obtained from The Guinness Book of Astronomy, Patrick Moore; published by Guinness
why Neptune and Pluto are the coldest planets.
why there could be no liquid water on the surface of:
which planet would the time between sunrise and sunset be shortest?
planet has the shortest year?
the name of the force, which keeps the planets in their orbits.
Bats are mammals that can fly. In many parts of the world bats live in
Many other animals live in the caves and some feed on bat droppings.
Bats fly out of the caves at night to catch insects.
The diagram shows part of a food web which includes the organisms living
in a cave.
summer, birds enter the caves and eat large numbers of beetles.
Suggest why this might cause the population of millipedes to:
(b) Draw a pyramid of numbers for the following food chain
plants à moths à
Sadie and Tom
carried out an experiment to investigate the digestion of starch using an
enzyme called amylase.
was the mixture of enzyme and starch kept in a water bath?
Sadie and Tom placed drops
of iodine solution on a white tile. They know that starch will turn the iodine
solution from brown to dark blue.
Every 30 seconds they
added a drop of the mixture of enzyme and starch to a drop of iodine solution on
the tile. At first the drops turned blue, but after 240 s they stayed brown.
did the mixture stop turning the drops of iodine solution blue after 240 s?
then carried out the experiment with the water bath at 35oC. This
time, the drops stopped turning blue after 120s. How does raising the
temperature from 25oC to 35oC affect the digestion of
Sadie and Tom want to compare the experiment at 35oC with the results
from the experiment at 25oC. Describe what they need to do to make this a fair
balanced diet includes all of the substances in the following list,
(i) Give the names of the two
substances in the list which are absorbed into the blood without being digested.
substance in the list passes through the body without being digested?
drawing shows the label on a box of fertiliser for houseplants.
maintain healthy growth of their potted plants, people have to keep adding
fertiliser to the soil. Explain why they need to keep adding fertiliser.
of the Periodic Table is shown below. The three elements N, P and K shown on the
fertiliser label are also shown in the table.
element N is nitrogen. What are the names of the other two elements?
the symbol for the most reactive metal shown in this part of the Periodic Table.
group of pupils carried out an experiment with four different liquids.
They wrapped paper tissues
around the bulbs of four thermometers. They secured the tissues with rubber
bands. Each thermometer was then dipped into a different liquid and removed. The
temperature was recorded. The reading on each thermometer was then noted every
The results are given in the table below.
which liquid evaporated most rapidly.
six minutes, the reading went up on the thermometer dipped in ether. Explain
is the likely temperature of the room in which they did the experiment?
pupils carried out the experiment with propanone again. However,
this time they did not wrap the thermometer in paper tissue but just
dipped the glass bulb into the propanone and removed it.
Suggest how their second set of results would be different.
A pupil wound a coil of copper wire around a glass tube and connected the
wire to a battery. She placed a compass at each end of the tube and one compass
beside the tube as shown.
Complete the diagram by drawing arrows in compasses X and Y to show the
direction of the magnetic field.
(ii) Draw an arrow in the middle of the
glass tube to show the direction of the magnetic field in the glass tube.
the switch is opened, in which direction will the three compass needles point?
one way to reverse the magnetic field around the glass tube.
pieces of iron are placed inside the glass tube.
the switch is closed, the magnetic field is the same as in the.
diagram below. The pieces of iron become magnetised.
Label the four poles on the pieces of iron.
the switch was closed, the pieces of iron moved. Explain why they moved.
maximum 7 marks
diagram shows a simple tool for punching holes in a leather belt.
When the handle is pressed
down, the steel peg presses down on the piece of leather. If the force is large
enough, the peg punches through the leather, making a hole.
The diagram below shows the
force applied to the handle.
the moment (turning effect) of the 50 N force applied to the handle. Give the
moment makes the steel peg press down on the leather. Calculate the force with
which the steel peg presses down on the leather.
next time the punch is used, the steel peg presses down on the leather with a
force of 150 N.
(i) The area of the end of the steel
peg is 0.1 CM2.
What is the pressure of the steel peg on the leather?
Give the units.
pressure is too small, and the punch does not go through the leather.
How could you change the design of the punch to make it work using the
same force on the handle?