Being a Scientist
Describing a liquid as "clear and blue" is this type of data, which relies on qualities rather than numerical measurements
What is qualitative data?
Friction and normal force are examples of this general category of forces that require physical touch between objects.
What are contact forces?
This physical property calculated as mass divided by volume determines if an object floats or sinks in water.
What is density?
This kind of mixture has the same composition throughout.
What is homogeneous?
The direction of a boat's travel if its engine gives it a forward thrust force going east and there is a current going north.
What is northeast?
Unlike an observation made directly with the senses, this is a logical conclusion or explanation based on observations.
What is an inference?
Using F = mg, this is the weight force of a 5 kg object on Earth (where g=9.8m/s2)
What is 49 N?
The phase change directly from a solid to a gas, skipping the liquid phase entirely, is known as this.
What is sublimation?
10 mL of eucalyptus oil is dissolved in 90 mL of baby oil to make a solution of this % v/v.
What is 10% v/v?
These poles of a magnet attract each other.
What are opposite poles of a magnet?
Ancient astronomers believed the Earth was at the centre of the universe in this model, which was later replaced by the heliocentric model based on new evidence.
What is the geocentric model?
In a magnetic field diagram, magnetic field lines always point away from this pole and towards the south pole.
What is the North pole?
In a salt water solution, salt is the solute while water acts as this liquid component.
What is the solvent?
This type of particle is the smallest part of an element
What is an atom?
This force will cause a balloon rubbed on a wool jumper to pick up small pieces of paper.
What is electrostatic force?
Aboriginal and Torres Strait Islander Peoples observed the position of this dark nebula constellation to predict the seasonal availability of emu eggs.
What is the Emu in the Sky
This simple machine consists of a rigid beam pivoting on a fulcrum used to reduce the effort force needed to lift a heavy load.
What is a lever?
A solution that has dissolved the maximum possible amount of solute at a given temperature is described by this term.
What is a saturated solution?
This kind of particle contains 2 or more atoms chemically bonded together
What is a compound?
This property of an object is calculated by dividing the mass of the object by the volume of the object.
What is density?
High ocean tides called spring tides occur when the Earth, Sun, and Moon align during these two phases of the Moon.
What are the New Moon and Full Moon?
Traditional Aboriginal hunting tools utilise leverage to increase the force on this weapon.
What is the Woomera?
If 20g of sugar is completely dissolved into 2L of solution, its concentration in milligrams per litre is this.
What is 10 000 mg/L?
This property of water allows some bugs to skate on its surface. It is due to the strong attraction of water molecules to each other.
What is surface tension?
This change in temperature will generally increase the solubility of a solid solute in a solvent.
What is a temperature increase?