Friction and Review

What is the first step of the engineering design process?

• Define the problem or identify the need

• Test and evaluate the solution

Tags

NGSS.MS-ETS1-1

What is the atomic number of an element equal to?

• Number of protons in the nucleus

• Number of electrons in the nucleus

What force allows crickets to make their song?

• Gravity

• Inertia

• Mass

• Friction

True or false - cars cannot stop without friction?

• False

• True

Tags

NGSS.MS-PS2-2

True or false - cars cannot move without friction?

• true

• false

What part of a roller blade reduces friction?

• Ball bearings

• Brakes

What does a slug secrete to move?

• Slime

• Mucus

Friction changes motion energy into what?

• potential energy

• heat energy

Tags

NGSS.MS-PS3-5

Where are airplanes tested for friction?

• Outer Space

• Wind Tunnel

Tags

NGSS.MS-PS2-2

What are the two lightest elements?

• hydrogen and helium

• carbon and oxygen