Unit Test: Topic 1, 2, 3

Question 1

Mass

Answer 1

the number of particles the substance has,

Question 2

External Forces

Answer 2

forces that act on a structure from the outside

Question 3

Internal Forces

Answer 3

forces that act on a structure from the inside

Question 4

Deformation

Answer 4

alternation of form or shape

Question 5

Dead load

Answer 5

a permanent force acting on a structure

Question 6

Live load

Answer 6

a changing force acting on a structure

Question 7

Tension Force

Answer 7

a force that stretches something

Question 8

Tensile Strength

Answer 8

measures the largest tension force a material can stand before breaking

Question 9

Compression Force

Answer 9

crushing a material by squeezing it together

Question 10

Compressive strength

Answer 10

measures the largest compression force a material can stand before losing its shape or breaking into pieces

Question 11

Shear Forces

Answer 11

They bend or tear a material by pressing different parts in opposite directions at the same time

Question 12

Shear Strength

Answer 12

measures the largest shear force the material can stand before ripping apart

Question 13

Torsion Forces

Answer 13

They twist a material by turning the ends in opposite directions

Question 14

Torsion Strength

Answer 14

it measures the largest torsion force the material can stand and still spring back to its original shape

Question 15

Bending Force

Answer 15

combination of tension and compression forces