P2F GLOSSARY

ALL THE WORDS YOU NEED TO KNOW FOR P2F SINGLE SCIENCE, OCR BOARD - HIGHER TIER, PHYSICS

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P2f
Centripetal force ­ force needed to keep an object moving along a
circular path.
Light-year ­ distance travelled by light passing through space for
one year.
Orbit ­ path followed by an object bound by the gravity of
another object.
Planet ­ object which orbits around a star.
Spacecraft ­ device which can travel into space, away from
Earth.
Star ­ sphere of hot gas, which emits light and heat.

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