Font size
WorksheetsMaterials - A Level Physics OCR B
Total questions: 10
Worksheet time: 7mins
What is the correct unit for strain?
Pa
Nm-2
No unit
Nm2
Select all the correct units for stress.
Pa
Nm-2
Nm2
No unit
Select all the correct units for Young's Modulus
Pa
Nm-2
Jm-3
No unit
A material that breaks by crack propagation is...
brittle
tough
stiff
ductile
The Young's Modulus is defined as...
The gradient of a stress strain graph
The energy required to stretch a material.
Stress/Strain
Force/Extension.
Why is glass brittle?
Cracks propagate along crystal planes.
Stress is spread out at crack tips.
Direction bonds prevent slip.
Covalent bonds act in all directions.
What is the definition of strength?
The strain required to break a material.
The force required to break a material.
Bench pressing 200kg with one arm (Grrrr!).
The stress required to break a material.
Which of the following are defects in metals?
Dislocations
Grains
Impurity atoms
Mislocations
Vacancies
Which class of materials has the greatest range of Stiffness?
Polymers
Metals and Alloys
Wood and wood products
Foams
What is the Young Modulus of the material?
2350 Pa
2.35 GPa
235 GPa
2350 GPa
