It's Alive
Who eats Who?
Human Impacts
Push, Pull, or Twist
Spin, Tilt and Orbit
Moon Madness
Forces x2
Brainiacs!
100
Give an example of organism that is a decomposer?
Bacteria or Fungi
100
When organism compete, they are fighting for the same...
resources
100
Name one human activity that can destroy animal habitats
Deforestation (or urban development, mining).
100
Give one example of a push and one example of a pull force.
Push – closing a door; Pull – opening a drawer
100
What causes day and night on Earth?
Rotation on its axis
100
The Moon’s gravitational pull on earth's oceans causes
Tides
100
The attraction or repulsion of magnets is knwon as a
Magnetic force
100
Name two situations where friction is useful and two where it is unwanted.
✔ Useful: brakes on a bike, shoes gripping the ground.
✔ Unwanted: slows machines, causes wear on engine parts.
200
Define ecosystem in your own words
A community of living (biotic) and non-living (abiotic) things interacting in an environment.
200
In a food chain, arrows show
The direction of energy flow
200
Give two examples of sustainable practices that help protect ecosystems.
Planting trees/reforestation, protected areas/national parks, sustainable fishing, recycling, reducing pollution.
200
What is a force?
A push, pull, or twist that can change an object’s motion, shape, or direction.
200
What is the role of gravity in the formation of the solar system?
The Sun's immense gravity keeps the planets in their elliptical orbits, preventing them from flying off into space.
200
Lunar eclipse
200
The force that slows motion between surfaces
Friction
200
Why must we add an extra leap day to the calender every four years?
We must add a leap day every four years to keep our calendar year aligned with the Earth's orbit around the sun. The Earth's solar year is approximately 365 and a 1/4
300
Give an example of a an abiotic and biotic factor?
Abiotic- Sunlight
Biotic - Frog
300
An organism that eats both plants and animals is called a:
Omnivore
300
What is the term for species that are at risk of dying out in the near future?
Endangered species
300
What is Force measured in and what can we use to measure it?
Newtons (N) using a spring balance.
300
Explain why Earth experiences seasons.
✔ Caused by Earth’s tilt on its axis and revolution around the Sun.
✔ Different parts of Earth receive varying amounts of sunlight throughout the year.
300
Solar eclipse
300
The force that opposes motion throught the air
Air resistance
300
Name Newtons 1st law
Inertia - an object will remain at rest or in uniform motion in a straight line unless acted upon by an unbalanced external force
400
Explain the difference between population and community.
✔ Population – all members of one species in an area.
✔ Community – all the living organisms in an ecosystem.
✔ Key difference: population = one species; community = many species.
400
Explain the Predator - Prey relationship
One hunts the other is hunted
400
Explain how overfishing can disrupt a marine ecosystem.
Removing too many fish changes the food chain, affects predator-prey balance, can cause population collapse of other species, and may reduce biodiversity.
400
What happens to an object when forces are balanced?
It stays still or moves at a constant speed.
400
Name the eight planets in order from the Sun.
400
What is the difference between the revolution and rotation of the moon and approximetly how many days is it?
Rotation uses its internal axis
Revolution uses an external axis
~28 days
400
An Upward force in water is known as
Buoyancy
400
A car is travelling at a steady speed, then accelerates. Explain what happens to the forces on it.
The forward (driving) force becomes greater than the opposing (friction/air resistance) force — unbalanced forces cause acceleration.
500
Give one structural and one behavioural adaptation that help an animal survive in its habitat
Structural: e.g. thick fur, long roots, camouflage.
Behavioural: e.g. migration, nocturnal activity, hibernation.
500
The region on Earth where life exists is called the
Biosphere
500
List two human activities that can harm ecosystems and one action that helps protect them.
✔ Harmful: deforestation, pollution, overfishing, habitat destruction.
✔ Helpful: conservation, reforestation, recycling, protecting endangered species.
500
What happens when forces are unbalanced?
The object speeds up, slows down, or changes direction.
500
What is the difference between the Geocentric and Heliocentric model of of the solar system?
✔ Historic: Geocentric model – Earth at the centre.
✔ Modern: Heliocentric model – Sun at the centre.
500
Which space mission successfully landed the first humans on the moon?
Apollo 11
500
Electric field around charged object is known as
Electrostatic force
500
Why do astronauts appear weightless in orbit even though gravity is still acting on them?
Because they’re falling around Earth at the same rate as their spacecraft — constant free fall creates “weightlessness.”