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Year 7 Science sample

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Question 1 of 5 Interpreting data

A student wants a cell that is 0.05 mm across to appear at least 20 mm across. The total magnification of a microscope is the eyepiece power multiplied by the objective power. Which setting should the student choose?

Microscope settings on the bench
SettingEyepiece powerObjective power
A5 times40 times
B10 times4 times
C10 times40 times
D25 times4 times
Question 2 of 5 Life and living

A patient loses a lot of water in their solid waste and is thirsty all day. Tests show that their food is broken down properly and that the broken down food does reach their blood. Which organ is most likely to be working poorly?

What each part of the gut does
OrganIts job
StomachMixes food with acid and starts breaking down protein
Small intestineTakes broken down food across into the blood
LiverMakes a green liquid that helps break up fat
Large intestineTakes water back out of what is left over
Question 3 of 5 Natural and processed materials

One of these four kitchen events made a substance that was not there before. Which event is it?

Four changes watched in a kitchen
EventWhat was seen
Butter on a warm benchTurns to liquid, and hardens again in the fridge
Milk left out for three daysSmells sour and thickens, and never returns to fresh milk
Salt stirred into warm waterDisappears, and white grains return once the water dries
Wax poured into a mouldSets into a new shape with the same smell and colour
Question 4 of 5 Earth and beyond

A gardener is planting seedlings in an old bed. The seedlings need loose ground that roots can push through and the greatest amount of decayed plant matter. Which layer should the seedlings be planted into?

Soil profile in an old garden bedLAYER Wwhole fallen leavesLAYER Xdark, crumbly, fine rootsLAYER Ypale clay, packs tightlyLAYER Zbroken rock piecesBoth planting conditions have to be met by the same band.
Question 5 of 5 Observing and measuring

The same jug of water was used three times. It was read on its own, then read again with stone P resting in it, then emptied, refilled to the first reading and read with stone Q resting in it. Which stone takes up more room, and by how much? One millilitre of water fills one cubic centimetre.

One jug read three timesWATER ONLY180 mLWITH STONE P245 mLWITH STONE Q230 mLEach stone raises the level by the room it takes up.
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