Daily Practice

GCSE Science

28th September 1989

5 questions · GCSE · 584 questions in this band

1
The Solar System, Orbital Motion and Satellites
Explain why a satellite moving in a stable circular orbit has a changing velocity even though its speed stays constant.
2
Red-shift and the Expanding Universe
State what red-shift shows about the motion of most distant galaxies.
3
Biology Required Practicals and Data Analysis
Why does taking repeat readings and calculating a mean improve the data?
4
Cell Biology
A student views a red blood cell at a magnification of x2000. The image of the cell measures 20 mm across. Calculate the real width of the cell, giving your answer in micrometres (um).
5
Cell Structure and Microscopy
Where is the DNA found in a bacterial cell?

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