Animals
Animals are divided into two groups. The first group has a backbone.
Vertebrates and invertebrates
How many planets orbit the sun? Name them.
There are eight: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
What's thermal energy?
Energy produced by heat.
What's a machine?
Is something we use to make work easier.
Name the three states of matter.
Solid, liquid and gas.
Name four characteristics of Mammals
They have fur and teeth. They are viviparous and drink their mother´s milk, they breathe using their lungs,
How many seasons are there? Name them.
There are 4 seasons: spring, summer, autumn(fall) and winter.
Name two examples of electrical energy.
TV, lamp, cp, etc
screw, wedge, pulley, inclinated plane, lever and fulcrum, wheel and axle.
contains two or more substances.
Are dolphins fish or mammals?
They´re mammals.
Complete: The Earth rotates on its ____ and it takes ______-_____ hours to complete one rotation.
The Earth rotates on its axis and it takes twenty-four hours to complete one rotation.
Name two examples of kinetic energy.
Moving things like bikes, cars, etc.
What is a complex machine?
A complex machine is made of many simple machines and they use energy.
When can a physical change happen?
When matter changes shape or state, but the substance doesn't change.
Name three characteristics of birds.
They have a beak, wings and feathers. They are oviparous.
How many phases of the moon are there? Name them in order.
There are six: new moon, crescent moon, first quarter, full moon, third quarter, crescent moon.
How can we obtain chemical energy?
By the food we eat.
Name 3 complex machines.
car, bicycle, washing machine, robots, etc.
When can a chemical change happen?
When a new substance is produced.
Two characteristics of invertebrates and 4 examples.
They don't have a backbone and have soft bodies, exoskeleton or a shell. Ex:insects, spiders, worms, snails, octopus, crabs.
When does a solar eclipse happens?
It happens when the moon passes between the Earth and the Sun.
What produces light energy?
The sun produces natural light.
Which two simple machines are used to make a pencil sharpener?
A lever and a wedge.
Name six properties of materials:
resistant, fragile, elastic, flexible, transparent, waterproof, opaque, rigid, heat conductor or heat insulator.