Unit 4- Forces and motion- Cambridge Primary Science 6

the amount of matter in an object /kg/

• Mass

• Weight

the amount of attraction on an object caused by gravity /N/

• Mass

• Weight

What explain Isaac Newton's law?

• Force

• Earth

• Mass

What is the other name of first law?

• Friction

• Inertia's law

• Air resistance

What is the other name of second law? F=ma

• Motion

• Mass

• Object

What is the direction balanced forces in 3rd law ?

• opposite forces

• forces to 1 direction

What means the arrow of forces in picture?

• Objects

• Wind

• Directions

What is the name of force caused when two surfaces rub together?

• Friction

• Gravity

• Magnetic

What is the name of force caused by air pushing against moving objects?

• Friction

• Air resistance

• Gravity

A parachute uses ....................... to work /in air/

• Air resistance

• Gravity

• Friction