Introduction to Science
States of Matter
Forces and Simple Machines
Space
Ecosystems
100
The scientific diagram shown is for a piece of scientific equipment called a
Beaker
100
The 3 states of matter are
Solid, Liquid and Gas
100
Forces are measured in
Newtons
100
The time taken for a complete orbit of the Moon around the Earth is closest to
1 month
100
The type of organism at the start of every food chain
plant
200
A scientific hypothesis is
a prediction about the outcome of the experiment
200
Diffusion is
the process by which a substance spreads out through another substance, from a high concentration to a lower concentration
200
Give an example of a non-contact force
gravity, magnetism, electrostatic
200
Why can we see the moon during the day
the Sun gives off a light which reflects off the moon
200
What is a food web?
- A group of interconnected food chains
- shows the relationship between organisms in an ecosystem
300
When heating and recording the temperature of a liquid with a Bunsen burner, the thermometer should be positioned how?
placed approximately midway in the centre of the beaker
300
How to calculate density
Denisty = mass / volume
300
Weight force can be defined as
The downwards pull of an object towards the centre of Earth
300
A lunar eclipse occurs when the Moon passes into the Earth’s shadow. This can only happen during:
Full moon
300
All things that exist can be grouped into these 3 categories
Living, Non-Living, Dead
400
The dependent variable in an experiment is
the variable that is measured by the scientist
400
A suspension is a?
cloudy liquid which contains insoluble particles
400
Calculate the net force (including direction)
3N Right
400
The diagram below relates to which season in Australia?
Summer
400
The 7 characteristics of living things can be abbreviated into:
MRS GREN
500
In an experiment that tests how different temperatures affect how fast a reaction occurs between baking soda and vinegar, the independent variable is?
the different temperatures at which the reaction takes place.
500
An emulsion is a
- colloid of 2 or more liquids
or
- mixture with 1 liquid is the ‘base’ and the other is broken into tiny ‘drops’
500
If Bob has a mass of 40kg, his approximate weight on Earth would be:
400N
500
During a solar eclipse, an observer on Earth sees a partial eclipse from some locations, but a total eclipse from others. What causes this difference?
The umbra causes a total eclipse, while the penumbra causes only a partial eclipse.
500
What role do decomposers play in the ecosystem?
Decomposers break down dead material and return their nutrients to the ecosystem