Laboratory
How do you smell something when working scientifically in the laboratory?
Waft it towards your nose.
What is an ecological relationship called when both species benefit?
A mutualistic relationship.
How many planets are in the solar system?
Eight.
How can you tell if something is renewable?
It can be replaced within a human lifetime.
Which state of matter can change shape but not volume?
Liquid.
What does the SETALighT principle refer to?
Safety. Edge. Tube. Air hole. Light a match. Turn on the gas.
What are the three types of adaptations a species may have?
Behavioural. Physiological. Structural.
What phase of the moon comes just before a full moon?
Waxing gibbous.
Plants release oxygen into the atmosphere via...
Stomata (transpiration).
What change of state occurs when a solid transforms into a gas?
Sublimation.
Describe how we made qualitative and quantitative observations in the practical investigation 'Icebergs and Eggbergs'.
Answers will vary.
What phylum and class to humans belong to?
Chordata. Mammalia.
What happens during a lunar eclipse.
Sun - Earth - Moon.
How is coal formed?
Originally plant matter that died and has been heated and under pressure.
Explain the process by which a puff of perfume will spread.
Answer should explain diffusion.
Explain how repeated measures improves the quality of data.
Answer should explain the benefit of calculating an average and removing outliers to enhance reliability of data.
Explain the moral of the story behind 'The Lorax'.
Answer should explain the concept of sustainability and minimising deforestation.
Why do seasons occur? What season is it now and what type of sunlight are we receiving?
Axial tilt, revolutions, spring (approaching summer with more direct sunlight).
Explain how water is stored in and retrieved from the Great Artesian Basin.
Answer should explain pervious and impervious rock and bores.
Explain the Tyndall effect in relation to the three types of mixtures.
Solution - clear - no reflected light. Colloid - cloudy - reflected light. Suspension - cloudy - reflected light.
Miss Heath recorded the number of quotes that Rita Skeeter took from her over a week. What is the best way to represent this data and why?
Line graph (continuous data). Day of the week - x axis, number of quotes - y axis.
Explain the difference between autotrophs and heterotrophs in relation to food pyramids.
Autotrophs create own energy source, heterotrophs consume their energy source.
Explain why we always see the same face of the moon.
The moon rotates on its axis at the same speed that it revolves around Earth.
What are two disadvantages of hydropower dams?
Water is too cold for species. Water is stagnant and too low in oxygen for species.
Explain two techniques to separate a) a soluble substance and b) an insoluble substance.
Answers will vary. a) Sieving, gravity, magnetism, centrifuging, filtration. b) evaporation, crystallisation, chromatography.