G7 Science - Class 15 Review | Baamboozle - Baamboozle

Explain how a heat pump works in the summer and in the winter. What is the ground temperature at around 5m below surface?

Heat pump circulates water from the outside ground to cool and warm the home. The ground temperature is around 8-10 degrees C at 5m below surface.

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How would you separate the following mixtures? a) Vegetable oil and sand b) Salt and pepper c) Blood

a) Oil will float and sand will settle b) Add water to dissolve the salt and filter out the pepper. Evaporate water from salt water. c) Centrifuge

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What is the name of the transition from Liquid to Solid?

Freezing

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What are the factors that affect dissolution. Explain each factor if we want to increase dissolution.

1) Temperature - higher temperature 2) Agitation - more agitation 3) Particle Size - smaller particles

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boom

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seesaw

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fairy

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baam

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a) What type of separation is this? b) If the solvent is water, which sample is more soluble in water, O or P?

a) Paper chromatography b) P is more soluble in water

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Name two types of renewable energy sources and two types of non-renewable energy sources.

Renewable - wind, hydro, solar, geothermal, biofuel Nonrenewable - fossil fuels, nuclear, natural gas

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Describe one way to prevent conduction, radiation, and convection in homes.

Prevent conduction – use insulators Prevent convection – use weather stripping Prevent radiation – install shiny surfaces in the attic

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baam

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fairy

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fairy

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baam

Lose 10 points!

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trap

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fairy

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rocket

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lifesaver

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What is the name of the transition from Solid to Gas?

Sublimation

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Which of the following solids is most soluble at 40°C? What is the area above the curve and below the curve called?

Solid B is most soluble at 40 degrees C. Area above is called supersaturated, area below the curve is called unsaturated.

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Explain the relationship between heat and kinetic energy.

Heat increases the kinetic energy of particles.

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Explain how a nuclear reactor works to produce electricity.

Refined uranium undergoes nuclear fission which produces heat to turn water to steam. Steam turns turbines and produces electricity.

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Identify conduction, convection, and radiation in this photo.

Conduction – the park bench is getting hotter through the particles increasing kinetic energy and warming up Convection – the breeze Radiation – the sunlight

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