Forces - Year 7

Look at the picture. If every person's strength is the same, which team will LOSE in "c."

• Red

• Tie

• Green

Look at the picture. If every person's strength is the same, which team will WIN in "b."

• Tie

• Red

• Green

The two forces shown in the diagram are acting on the boat. Look at the force arrows and determine which direction (Left or right) the boat will move.

• Left

• Forward

• Right

• Backward

What units are used to measure forces?

• Grams

• Newtons and grams

• Newtons

• Kiloliters

What are the three things you can identify when a force acts?

• Changes in speed, direction, or shape

• Changes in speed, colour and sound

• Changes in speed and direction

• Changes in shape and size

Different forms of force include:

• Ground and sky

• Wind and air

• The elements

• Gravity,friction, magnetic etc.

What is friction?

• A force?

• Friction is a contact force that occurs when two or more surfaces (objects) are touching.

• Gravity and friction are the same thing

• A downward pull that keeps us on the earth

What are the two natures of a force?

• Contact and non-contact

• Acting on a person or animal

• Nature....

• Changes shape or direction of an object

What is Unbalanced Forces?

• Where the forces acting on an object are unequal, so the object moves in the direction of the strongest force.

• where the forces are all even

• where the forces acting on an object are unequal, so the object remains stationary.

• Where an object stops motion entirely

What are the two determining factors for how much gravity an object has.

• Mass and Distance

• Mass

• Distance

• Colour and Hair