Ecology
Name 3 communities.
Field, garden, rotting log, pond, single tree, seashore, leaf litter.
Name 2 non-metal electrical conductors.
Water, salt solution and graphite.
Male mosquitoes and generally larger than female mosquitoes. True or false?
False.
Name 2 renewable energy sources.
Moving water, wind and solar.
What does the earth go around in 365 days?
The Sun.
Instead of writing "A feeds on B", write "A ____ on B".
*Both A and B are animals
Prey
Name 2 methods of making temporary magnets.
Stroking method and electrical method.
What is moulting?
Shedding of outer covering in order to grow bigger.
Which 2 factors affect the amount of kinetic energy an object has?
Mass of object and speed of object.
This animal's name also means to close something tightly.
Seal.
Name 2 structural adaptation for plants to obtain sunlight.
Thorns or tendrils on the stem,
air spaces in the leaf or stem.
What is the function of cytoplasm?
It allows cell parts to move around within the cell.
Nymphs are smaller, wingless and moults while
adults are bigger, with wings and do not moult.
Light energy to electrical energy.
A thousand years is known as a _______.
Millennium.
Name 3 ways animals breathe in water.
By breathing tubes, gills, air bubbles, moist skin, blowholes or nostrils on top of animals' heads
Name the 3 blood vessels.
Arteries, veins and capillaries.
Why does the mass of seed leaves decrease as the seedling grows?
The food stored inside the seed leaves are used up for the seedling to grow.
Why aren't canned drinks completely filled up?
To allow room for the liquid to expand upon heating, to prevent the cans from bursting.
This protein makes the blood red in colour.
Haemoglobin.
Name 4 behavioural adaptation in animals.
Huddling, teamwork, playing dead, migration, hibernation, mating dance/call, rarely sweat or urinate.
What are 2 uses of electromagnets at home?
Alarm system, electric door bell and circuit breaker.
What are 2 advantages for the young and adults to live in different places?
1. They do not have to compete for resources, so their chance of survival is higher.
2. When the conditions in one place becomes unfavourable, the young or adult in another place continues to survive.
How do elephants with larger ears lose heat faster?
Having a larger exposed surface area in contact with the cooler surroundings help them to lose heat faster.
Aerodynamics.