Transcontinental Railroad

What shipped raw goods to cities where it changed raw materials into consumer products?

• Model T

• transcontinental Pony Express

• railroad

• ships

Which scientific principle was crucial in the construction of the Transcontinental Railroad, allowing engineers to calculate the force needed to move trains uphill?

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Law of Conservation of Energy

Tags

NGSS.MS-PS2-2

What type of energy transformation occurs when a steam locomotive moves along the Transcontinental Railroad?

• Chemical energy to thermal energy

• Thermal energy to mechanical energy

• Mechanical energy to electrical energy

• Electrical energy to chemical energy

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which material, essential for the construction of the Transcontinental Railroad, is primarily composed of iron and carbon?

• Aluminum

• Copper

• Steel

• Brass

What scientific advancement allowed for the precise measurement of time across different regions, which was crucial for the scheduling of trains on the Transcontinental Railroad?

• Atomic clocks

• Time zones

• Sundials

• Pendulum clocks

Which geological process had to be understood and managed during the construction of the Transcontinental Railroad, especially when tunneling through mountains?

• Erosion

• Sedimentation

• Plate tectonics

• Weathering

What is the primary reason for the expansion of metal rails in the Transcontinental Railroad during hot weather?

• Thermal expansion

• Chemical reaction

• Oxidation

• Magnetic attraction

Tags

NGSS.MS-PS1-4

Which scientific concept explains why the Transcontinental Railroad tracks need to be laid with gaps between sections?

• Thermal contraction

• Thermal expansion

• Elastic deformation

• Plastic deformation

What type of simple machine is primarily used in the design of a railroad track switch?

• Lever

• Pulley

• Inclined plane

• Wedge

Which scientific principle is applied when designing the slope of a railroad track to ensure trains can ascend and descend safely?

• Friction

• Gravity

• Centripetal force

• Inertia

Tags

NGSS.MS-PS2-4