G7 Science - Class 15 Review | Baamboozle - Baamboozle

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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

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

Sublimation

Explain the relationship between heat and kinetic energy.

Heat increases the kinetic energy of particles.

Identify three energy transformations found in this picture.

Electrical to Light Electrical to Mechanical Electrical to Sound

Draw ten particles in a balloon that are at room temperature and ten particles in a balloon that are at 60°C.

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Name the three gases responsible for the greenhouse effect.

carbon dioxide, methane, nitrous oxides

Name four effects of climate change.

Increased wildfires Increased flooding Decreased ice and glaciers Drought Sea levels rising

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.

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

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.

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

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

Categorize the following as a mechanical mixture, solution, or pure substance. a) Pizza b) Ketchup c) Copper

a) Mixture b) Solution c) Pure substance

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.

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

Freezing

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

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

What is the Particle Theory of Matter?

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