Physics materials

Label each point on the graph.

The density of a substance is defined as its [blank_start]mass[blank_end] per [blank_start]unit[blank_end] [blank_start]volume[blank_end].

What is the equation to find density?

Hooke’s Law can be expressed as F=ke.

State Hooke’s Law

K in the Hooke’s Law equation represents how elastic a material is.

A brittle material has [blank_start]very little/no [blank_end]extension before [blank_start]breaking[blank_end].

A ductile material [blank_start]extends[blank_end] significantly before [blank_start]breaking[blank_end] and can be drawn into [blank_start]wires[blank_end].

[blank_start]Force[blank_end] is proportional to extension and the material[blank_start] obeys Hooke’s Law[blank_end] up to the limit of proportionality

The [blank_start]elastic limit[blank_end] is the maximum amount that a material can be stretched and still return to its [blank_start]original length[blank_end]

The yield point is the point at which [blank_start]stress[blank_end] in the wire suddenly [blank_start]drops[blank_end] when the wire is subject to increasing [blank_start]strain[blank_end]

The ultimate tensile strength is the greatest stress on a material before breaking

What is the breaking point of an object?

Elastic behaviour is when an object [blank_start]will[blank_end] return to its [blank_start]original shape[blank_end] when the deforming force is removed

Plastic behaviour is when the object [blank_start]does not[blank_end] return to its [blank_start]original shape[blank_end] when the deforming force is removed

Plastic deformation is permanent deformation/ permanent extension

Stress is [blank_start]force per unit cross-sectional area[blank_end]

Strain is [blank_start]extension divided by its original length[blank_end]

The Young Modulus of a material is the [blank_start]stress divided by the strain [blank_end]

What is this the equation for?

What does the gradient of this graph represent?

What does the gradient of this graph and the area underneath it represent?

What does the area under this graph represent?