Which is the main function of the circulatory system?
pump blood around the body
Which are the three states of matter?
solid, liquid, gas
Which apparatus measures forces?
forcemeter
What is the first element in a food chain?
producer
How many days does the Earth to orbit around the Sun?
365
Which is the boiling point for water?
100 degrees Celsius
What is a solution?
A mixture of a solvent and soluble solid.
Which is the main source of energy in a food chain?
Sun
Name six properties of materials.
.............
What can I do to follow a fair test?
change only one variable
Which are the 7 life processes?
movement, nutrition, respiration, reproduction, excretion, sensitivity, growth
Which are the changes of states of matter?
melting, freezing, condensation and evaporation
Which are the 5 separating methods?
filtration, sieving, magnetism, by hand, evaporation
What is the main function of the lungs?
breathe in oxygen, breathe out carbon dioxide
In which unit is sound measured?
decibels
How can I separate paper clips from sand?
magnetism
Name 3 positive effects of humans on the environment.
..........
In which direction does gravity go to?
down
What is a force?
A pull or push
Which are the 5 steps in a plant life cycle?
germination, growth, pollination, fertilization and seed dispersal
What is an electric insulator?
does not let electricity flow through
Which are the main organs in the respiratory system?
lungs
Name 5 important bones.
.........
How does light travel?
In straight line
What is a soluble material?
It can dissolve.
What is the last element of a food chain called?
top predator
How does a plant make its own food?
photosynthesis
Name three animals that live in the desert.
.............
What is loudness?
A property of sound
Which food groupd do we have to eat least to be healthy?
sweets, fats and oils
Melting ice is reversible or irreversible change?
reversible
How is a shadow made?
an opaque object blocks the light
What is condensation?
change between gas to liquid
How is sound made?
by vibrations
What is friction?
A force produced when two surfaces rub together
What is an irreversible change?
Chemical change
Which are the 5 senses?
hearing, smell, touch, sight and taste