Forces

What are forces?

(¿Qué son las fuerzas?)

• Forces are invisible creatures that move objects
• Forces are colors that objects emit
• Forces are push or pull an object

• Forces are sounds produced by objects

The effects of forces are...

Choose 4:

(Los efectos de las fuerzas son...

Elige 4):

• make objects change shape

• break objects

• make a new object

• make objects stop moving

• make objects start moving

There are two types of force:

(Hay dos tipos de fuerza):

• Frictional force and tension force
• Gravitational force and magnetic force
• Contact force and non-contact force
• Push force and pull force

The most important non-contact force is...

(La fuerza más importante de no contacto es...)

• Gravity
• Inertia
• Friction
• Magnetism

Many forces repel obects. Other forces _________ objects.

What is a machine?

(¿Qué es una máquina?)

• A machine is a type of animal found in the wild.
• A machine is a type of fruit that grows on trees.
• A machine is a type of cloud formation in the sky.
• A machine is a device that does a task. It makes our lives easier and saves time.

The three simple machines most common are:

• Lever

• Plane

• Inclined plane

• Pulley

• Pencil

The first machines were very _______

First machines were made of:

(Las primeras máquinas estaban hechas de):

Choose 3

• stone and bones

• metal

• wood

• coal

• leather and rope

Machines improved when people started using tools made up of:

(Las máquinas mejoran cuando las personas empiezan a utilizar herramientas hechas de):

• Metal

• Bones

• Wood

• Leather