Grade 10 Physics · Strand 1: Mechanics and Thermal Physics · Introduction to Physics
Core Branches of Physics
A short Grade 10 Physics lesson for the CBE curriculum, part of Mechanics and Thermal Physics: Introduction to Physics. Learn it on any phone with notes and slides, then check yourself with a quick quiz and earn XP. This lesson is free.
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5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.
1. Why does a longer spanner make it easier to loosen a tight nut on a bicycle wheel?
- A. It increases the perpendicular distance from the pivot, giving a greater moment
- B. It reduces the mass of the nut
- C. It removes friction between the threads
- D. It cancels the force of gravity on the wheel
2. A pupil pushes down with a force of 40 N on a spanner at a perpendicular distance of 0.25 m from the nut. Calculate the moment of the force about the nut.
Type your answer (in N m) in the lesson.
3. Which statement about a convex wing mirror on a matatu is correct?
- A. It forms a diminished image and gives a wider field of view
- B. It forms an image larger than the object and gives a narrower field of view
- C. It forms an image of exactly the same size as the object
- D. It bends light because light changes speed in the glass
4. Why is the lid of a metal sufuria made slightly wider than the pot?
- A. So it does not jam when the rim expands during heating
- B. So it reflects more light into the pot
- C. So the water boils at a lower temperature
- D. So it increases the mass of the pot
5. Name the branch of physics that deals with heat transfer, temperature and thermal expansion.
Type your answer in the lesson.
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