Science 8 Final Review - Mechanical Systems

What factor is influencing technological development below?

"All new car models go through multiple crash tests before making it to market"

• trial and error

• society

• environment

• scientific advancements

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

What factor is influencing technological development below?

"EV (elelctric vehicles) produce less emissions than gas powered vehicles"

• trial and error

• society

• environment

• scientific advancements

Tags

NGSS.MS-ESS3-4

Which of the following best illustrates the influence of science on technological development?

• Pascal’s law is used to design efficient hydraulic systems

• Crash test dummies are used to test new car designs

• Road salt rusts cars faster than sand.

• Gas engines are 25% efficient.

Tags

NGSS.MS-PS3-3

What factor is influencing technological development below?

"The National Highway Traffic Safety Administration (NHTSA) estimates that using lap and shoulder seat belts reduces the risk of: Front seat passenger car occupant deaths by 45%"

• trial and error

• scientific advancment

• societal

• safety

Tags

NGSS.HS-ETS1-3

NGSS.HS-PS2-3

A machine can do any of the following, except

• Increase work output

• Increase speed

• Increase force

• Change direction

Which of the following describes a 3rd-place lever?

• load force located between the effort force and fulcrum

• effort force located between the load force and fulcrum

• fulcrum located between the effort and load forces

• effort force and load force in same location

A(n) __________ is a simple machine that consists of two round objects that rotate together.

• movable pulley

• hand-operated can opener

• inclined plane

• wheel and axle

Tags

NGSS.MS-PS2-1

This class of lever is a

• 1st class

• 2nd class

• 3rd class

• 4rth class

Which one of the following is the appropriate sub-heading for A, B, C and D?

• A - wheel and axle

  B - Inclined plane

  C - pulley

  D - lever

• A - wheel and axle

  B - pulley

  C - inclined plane

  D - lever

• A - Gears

  B - Inclined plane

  C - Pulley

  D - wheel and axle

• A - Gears

  B - Pulley

  C- lever

  D - inclined plane

A disadvantage of a ramp is

• you gain a force advantage

• you lose a force advantage

• you gain a speed advantage

• you lose a speed advantage