1 a veins arteries capillaries · veins arteries capillaries First ___ next _ last ___ [1...

Exploring Science edition © Pearson Education Limited 2008353

Foundation Tier 3-6 Test

1 Blood is pumped around the body by the heart.

a Write the following in the order blood passes through them after leaving the heart.

veins arteries capillaries

First _____________ next _____________ last _____________

[1 mark]

b Choose from the list of organs in the box to answer the question.

From which organ does blood gain:

i digested food ___________________________________________________________________

[1 mark]

ii oxygen? _______________________________________________________________________

[1 mark]

c Fibre and starch are made from the same chemicals but provide different parts of a balanced diet.

i What type of nutrient is starch? __________________________________________________

[1 mark]

ii What is formed by the digestion of starch? ________________________________________

[1 mark]

2 Anne was investigating the animals that lived in a wood. She collected all the dead leaves in 0.5 m2 of the wood and put them in a Tullgren funnel. The light on the funnel

makes the animals move away from it, and they fall into the beaker.

brain bones heart intestines lungs stomach

Name Class Date

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Ann counted the animals in the beaker. Here are some of her results.

Name of animal Numberarmadillo mite 52earthworm 1hunting mitespider beetle

Here are the animals that Anne has not yet counted.

a Fill in the spaces in the table.

[1 mark]

The animals in Anne’s leaf litter are all invertebrates. This table shows some invertebrates.

Group CharacteristicRoundworms • long, thin round worm-like bodies

• bodies with no segmentsAnnelids • round, worm-like bodies

• bodies divided into segmentsFlatworms • fl at,worm-like bodies

b What is an invertebrate?

___________________________________________________________________________________

[1 mark]

beetle

hunting mites

spider

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c This is the earthworm that was in Anne’s sample.

[1 mark]

i Which group does it belong to?

_________________________________________________________________________________

[1 mark]

ii Explain why you chose this group.

_________________________________________________________________________________

_________________________________________________________________________________

[1 mark]

Imran decided to use a pitfall trap for his sampling. The pitfall trap is a pot buried in the ground, and small animals fall into it as they walk around.

d Which method would you use if you only wanted to identify the animals in a wood that were nocturnal (only move around at night)? Explain your answer.

_________________________________________________________________________________

_________________________________________________________________________________

[1 mark]

pointed head

bristles

slimy skin

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e i Armadillo mites eat leaves. Use the information in the table to draw a food chain below showing the two types of mites, leaves and the beetle.

[1 mark]

ii Explain why you have put the animals in this order. Use the word ‘energy’ in your answer.

_________________________________________________________________________________

_________________________________________________________________________________

[1 mark]

f The wood being investigated has a total area of 150 m2.

Look at Anne’s results, and calculate how many armadillo mites you would expect to fi nd in the whole wood.

_________________________________________________________________________________

[1 mark]

g Imran counts the armadillo mites in his sample, and calculates that there would only be 50 of them in the wood.

Why do you think Imran’s sample gives a different answer for the total number of armadillo mites?

_________________________________________________________________________________

_________________________________________________________________________________

[1 mark]

3 Helen investigated which disinfectant is best at killing bacteria. She used a Petri dish with agar jelly in it. The jelly was covered with bacteria. She soaked discs of paper in different makes of disinfectant, and put the discs onto the jelly.

Petri dish

disc of paper soaked in disinfectant

forceps

agar jelly covered with bacteria

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Helen put a lid on the dish, sealed it and left it for a week. This is what the dish looked like at

the end of a week.

a i Write the numbers of the four disinfectants in order, starting with the one that is best at killing bacteria.

Best Worst

_____________ _____________ _____________ _____________

[1 mark]

ii Explain how you worked out your answer to part i.

_________________________________________________________________________________

_________________________________________________________________________________

[1 mark]

Some disinfectants should be mixed with water before they are used.

Helen did another experiment using just one disinfectant, mixed with different amounts of water.These are her Petri dishes after one week.

1

3 4

2 5

7 8

6

1

3 4

2

disc soaked in bleach

area with no bacteria growing

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This is Helen’s results table.

Disc 1 2 3 4 5 6 7 8

Volume of disinfectant (cm3) 1 1 1 1 1 1 1 1

Volume of water (cm3) 0 1 2 3 4 5 6 7

Diameter of circle (mm) 17 17 17 17

b Fill in the last four boxes in the table.

[1 mark]

c i By how much should this disinfectant be diluted to be effective as well as economical?

___________________________________________________________________________________

ii Explain your answer.

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

iii Why should you not use a stronger mixture than the one you recommend?

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

4 Porous rocks can absorb water.

Joe tested some rocks to see how porous they were.

Joe found the mass of each rock, then put it into some water. He left the rocks in the water for ten minutes, then he took them out and wiped them with a paper towel before he found the mass again.

The table shows his results.

Rock Dry mass (g) Wet mass (g) Mass of water (g)

A 20.4 20.4

B 23.2 25.0

C 19.8 20.7

D 24.9 25.8

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a i Why did Joe wipe the rocks with a paper towel after he took them out of the water?

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

ii Why did Joe leave the rocks in water for ten minutes?

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

b Calculate the mass of water absorbed by each rock, and fi ll in the last column of the table.

[1 mark]

These diagrams show the textures of the different rocks that Joe was testing.

W X Y Z

c Which texture best represents Rock A? Explain your answer.

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

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Joe wanted to fi nd out if there was a relationship between the porosity of a rock and its density.

He needed to fi nd the volume of each rock to work out the density.

d Describe how Joe can measure the volume of each piece of rock.

___________________________________________________________________________________

___________________________________________________________________________________

___________________________________________________________________________________

___________________________________________________________________________________

[2 marks]

e i When Joe has worked out the density of each piece of rock, what can he do with his results to fi nd out if there is a relationship?

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

ii What will he see if there is a relationship?

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

5 Fran and Carol want to see if adding salt to water changes the boiling point of the water. They use the apparatus shown.

a i What piece of apparatus will they use to heat the water?

___________________________________________________________

[1 mark]

ii What would they use to hold the boiling tube?

__________________________________________ [1 mark]

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heat

25cm³water



b They heat the water until it boils, and then read the thermometer.

How do they know when the water is boiling?

___________________________________________________________________________________

[1 mark]

This graph shows their results.

[1 mark]

c What conclusion can you draw from their results?

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

Fran and Carol are talking about their experiment.

d i How could Fran and Carol get more accurate results if they did their experiment again?

_________________________________________________________________________________

[1 mark]

ii Fran wants to try the experiment with different masses of salt, so she can plot more points on the graph.

Suggest three different masses of salt she could use.

_________________________________________________________________________________

[1 mark]

I noticed therewas some salt left in the water when we added 5g, even when the water had started to boil.

It was difficult toread the thermometer accurately – oneresult was between two marks so I guessed it was 105.5 degrees.

Fran Carol

100

102

104

106

108

110

10 2 3 4 5

Mass of salt added (g)

Bo

ilin

g p

oin

t o

f wat

er (º

C)

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e Look at Fran’s comment. What does this tell you about the accuracy of the last point on the graph? (The result for 5 g salt.)

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

6 Matt is using this apparatus for an investigation

The three rods are all made of different materials. There is a drawing pin stuck to the end of each rod with a blob of wax.

Matt heats the ends of the rods with a Bunsen burner, and times how long it takes for the pins to fall off.

a Why will the pins fall off the ends of the rods?

___________________________________________________________________________________

[1 mark]

b What property of materials is Matt investigating?

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

c Write down one factor that Matt will have to keep the same to make sure his test is fair.

___________________________________________________________________________________

[1 mark]

d Matt uses three stopclocks to record the time the pins fell off the rods.

Iron Copper Glass

Exploring Science Copymasters - PhysicsAW/P3d/4/fig 1Mac/eps/Ilustrator 8.01/BW s/sText: Meridien Roman 9/10.5ptPEARSONStudio: Peters & Zabransky

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Complete Matt’s results in the table.

Material Time for pin to fall off

(minutes)

Copper

[2 marks]

e How should Matt show his results? Tick one box.

pie chart line graph bar chart scatter graph

[1 mark]

f Write a conclusion for Matt’s experiment.

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

g Sue says it would be easier for Matt to do the experiment if he heats the three rods separately. Matt says his experiment is more accurate if he heats them all at once, as shown in the diagram at the beginning of the question.

What is one advantage of heating all the rods at once?

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

h Sue did a similar experiment, but she used this apparatus. She repeated the experiment three times, once with each type of rod.

i Suggest the advantage of doing the experiment Sue’s way.

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

rod being tested

pins held on with wax

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ii How should Sue plot her results? Explain your answer.

___________________________________________________________________________________

___________________________________________________________________________________

[1 mark]

7 Reema was investigating the different sounds that a stretched string can make. She was using a sonometer to make the sounds, and an oscilloscope to measure them.

a i Suggest one thing that Reema could investigate using this apparatus.

_________________________________________________________________________________

[1 mark]

ii Suggest one factor that Reema would have to keep the same in her investigation.

_________________________________________________________________________________

[1 mark]

b This diagram shows the oscilloscope after the string has made a sound.

i How many complete waves is it showing?

______________________________________________________________

[1 mark]

ii Frequency is the number of waves passing each second. What frequency is the sound wave?

_________________________________________________________________________________

[1 mark]

c Reema could have used a guitar instead of the sonometer for her investigation. Suggest one reason why it is better to use the sonometer.

___________________________________________________________________________________

[1 mark]

0.01 seconds

moveable block wire

pulley

masses

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Transcript of 1 a veins arteries capillaries · veins arteries capillaries First ___ next _ last ___ [1...

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Documents

Transcript of 1 a veins arteries capillaries · veins arteries capillaries First _____ next _____ last _____ [1...

1 a veins arteries capillaries · veins arteries capillaries First ___ next _ last ___ [1...

Transcript of 1 a veins arteries capillaries · veins arteries capillaries First ___ next _ last ___ [1...