WorksheetsBiology and Chemistry Quiz
Total questions: 20
Worksheet time: 10mins
Diffusion is the movement of particles from:
Cold to hot
High concentration to low concentration
Low concentration to high concentration
Solid to liquid
An electromagnet works only when:
It is made of steel
Electricity flows through it
It is painted
It is heavy
Which material is best for making an electromagnet core?
Plastic
Wood
Soft iron
Glass
Increasing which factor makes an electromagnet stronger?
Fewer coils
More coils of wire
Short wire
No battery
The atomic number of an element shows the number of:
Neutrons
Protons
Electrons + neutrons
Atoms
Mass number is the total number of:
Protons only
Electrons only
Protons and neutrons
Neutrons only
Which particle has no electric charge?
Proton
Electron
Neutron
Ion
The center of an atom is called the:
Shell
Orbit
Nucleus
Molecule
Which factor affects solubility?
Colour
Shape
Temperature
Sound
Sugar dissolves faster in hot water because:
Water is sweet
Particles move faster
Sugar melts
Water is heavier
Aerobic respiration needs:
Carbon dioxide
Nitrogen
Oxygen
Water
Anaerobic respiration happens when:
Oxygen is present
Oxygen is absent
Food is absent
Water is absent
Anaerobic respiration produces less energy because:
More oxygen is used
Food is not broken fully
It is faster
It uses sunlight
Bioaccumulation means:
Increase of animals
Build-up of harmful substances in one organism
Spread of plants
Loss of energy
Biomagnification happens when:
Toxins increase at higher food levels
Plants grow fast
Animals migrate
Food decreases
An invasive species is one that:
Is endangered
Lives in water
Enters a new area and harms it
Is very small
One harmful effect of invasive species is:
More biodiversity
Balanced ecosystem
Harm to native species
Cleaner environment
A pure substance contains:
Only one type of particle
Many substances mixed
Dirt
Water and salt
Air is an example of:
Pure substance
Element
Impure substance
Compound
__________ best describes an ecosystem
A group of animals only
The living and non-living things that interact in an area
Only the plants in a habitat
A single organism
