12 a B2 2 B1 for correct distance column M B1 for correct diameter column B6 B1 cao i Jupiter B1 cao ii Pluto b B1 cao iii Pluto iv Jupiter B1 cao B1 cao v Uranus B1 cao vi Earth and Venus c C3 C3 for clarity of explanation and of finding some trend Diameter and mass increase with distance from the Sun until you reach Jupiter. Diameter and mass then decrease with distance from the Sun. within the data 11 13 a Sometimes true not true for fractions or B1 2 B1 for sometimes M – negative numbers. C1 C1 for correct explanation b Always true (positive × positive = B1 B1 for always true positive, Negative × negative = positive). C1 C1 for correct explanation c False you find the square root of a B1 B1 for false – can’t negative number using real numbers. C1 C1 for correct explanation d Always true The cube root of a positive B1 B1 for always true – number is positive and the cube root of a C1 C1 for correct explanation negative number is negative. 8
12 a b c i Jupiter ii Pluto iii Pluto iv Jupiter v Uranus vi Earth and Venus Diameter and mass increase with distance from the Sun until you reach Jupiter. Diameter and mass then decrease with distance from the Sun. B2 B6 C3 2 B1 for correct distance column B1 for correct diameter column B1 cao B1 cao B1 cao B1 cao B1 cao B1 cao C3 for clarity of explanation and of finding some trend within the data M 11 13 a b c d Sometimes true – not true for fractions or negative numbers. Always true (positive × positive = positive, Negative × negative = positive). False – you can’t find the square root of a negative number using real numbers. Always true – The cube root of a positive number is positive and the cube root of a negative number is negative. B1 C1 B1 C1 B1 C1 B1 C1 2 B1 for sometimes C1 for correct explanation B1 for always true C1 for correct explanation B1 for false C1 for correct explanation B1 for always true C1 for correct explanation M 8
Higher_Skills_Number_MarkScheme_Edexcel.docx