Checkpoint Science 0846 — Full Mock Paper

Working:

1. Sharp front teeth that cut food are incisors.
2. Pointed teeth that tear food are canines.
3. Flat back teeth that grind food are molars.

Strand: Biology — humans / teeth (0846)

Framework LO: 3Bh3

Working: the skeleton supports the body (holds it up) and protects soft organs (e.g. the skull protects the brain, the ribs protect the heart and lungs). Digestion, pumping blood and carrying messages are done by other systems.

Strand: Biology — humans / skeleton (0846)

Framework LO: 4Bh2

Working: mammals have fur and feed their young milk (dog, bat — a bat is a flying mammal); birds have feathers (eagle); fish have gills and fins (salmon); insects have six legs and three body parts (butterfly, ant).

Strand: Biology — classifying animals (0846)

Framework LO: 3Bh6

Working: the top predator has arrows pointing TO it but none leading away from it. Every chain ends at the owl, and nothing eats the owl — so it is the top predator.

Strand: Biology — food webs (0846)

Framework LO: 6Be5

Working: reversible changes can be undone (freeze↔melt; dissolve↔evaporate). Frying, burning and rusting make new materials that cannot be changed back — irreversible.

Strand: Materials — reversible vs irreversible (0846)

Framework LO: 6Cc1

Working: the salt has dissolved, so filtering will not separate it. If the water evaporates away, the salt is left behind. (Filtering only works for things that have not dissolved, like sand.)

Strand: Materials — separating mixtures (0846)

Framework LO: 5Cs5

Working: the temperature falls from 80 °C to 41 °C, so it is going down — the water is cooling.

Framework LO: 6Eo6

Working: to compare fairly, the starting conditions — like the amount of water — must be kept the same, otherwise it would not be a fair test.

Framework LO: 6Ep6

Working: closing the switch joins up the gap, making a complete loop. Current can now flow all the way round from the cell, so the lamp lights.

Strand: Physics — electricity / complete circuits (0846)

Framework LO: 6Pm4

Working: metals like copper and steel let electricity flow through them — they are conductors. Plastic, wood and rubber do not let electricity through — they are insulators (which is why wires are coated in plastic).

Strand: Physics — conductors & insulators (0846)

Framework LO: 6Pm1

Working:

1. The force that pulls objects down towards the Earth is gravity.
2. The force between two surfaces that rub together is friction.
3. The amount of matter in an object is its mass.

Strand: Physics — forces (0846)

Framework LO: 6Pf1

Working: a tighter or shorter string vibrates faster, and faster vibrations give a higher pitch. (Plucking gently changes the loudness, not the pitch.)

Strand: Physics — sound & pitch (0846)

Framework LO: 4Ps5

Working: light travels in straight lines. The opaque object blocks the light, so no light reaches part of the screen behind it — that dark area is the shadow.

Strand: Physics — light & shadows (0846)

Framework LO: 5Pl1

Working: day and night happen because the Earth spins once every 24 hours. The half facing the Sun has day; the half facing away has night. The Sun does not move around the Earth or switch off.

Strand: Earth & space — day and night (0846)

Framework LO: 5Pb1

Working:

1. Water heated by the Sun turns to vapour — evaporation.
2. Vapour cooling high in the sky to form clouds — condensation.
3. Water falling as rain, snow or hail — precipitation.

Strand: Earth & space / materials — the water cycle (0846)

Framework LO: 5Cs2

Working: a conclusion is what you decide you have found out after looking at your results. (A prediction is made before; a method is how you did it.)

Strand: Scientific enquiry — enquiry vocabulary (0846)

Framework LO: 6Eo7

Working / model answer: Repeat the test several times (with the same size ice cube) and compare the results / take an average. Repeating lets you check the readings agree, which makes the results more reliable.

Strand: Scientific enquiry — reliability (0846). Keyword auto-graded, model answer shown.

Framework LO: 6Eo2

Working: a butterfly’s life cycle goes egg → caterpillar (larva) → chrysalis (pupa) → adult butterfly, which then lays eggs and the cycle repeats.

Strand: Biology — life cycles (0846)

Framework LO: 3Bh1

Working: plastic is a poor conductor of heat (a heat insulator), so it stays cool enough to hold even when the metal pan is hot.

Strand: Materials — properties & uses / heat insulators (0846)

Framework LO: 3Cp4