Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Science Exam
2025 Sem 2 (Physics and Earth Space Sciences)
| Question | Answer |
|---|---|
| Define the term vector. | A quantity that has magnitude and direction. |
| Define the term scalar. | A quantity that has magnitude. |
| Classify the following as vector or scalar and apply their corresponding units: Distance Acceleration Force Speed Time Velocity Displacement | Vector: Distance (cm, m, km...), velocity (m/s, km/h), Acceleration (m/s/s, km/h/s), force (N) Scalar: Distance (m, km...), speed (m/s, km.h), time (sec, min...) |
| Examples for when distance is not equal in magnitude to displacement. | 1. When an object changes direction. 2. Irregular path (zig-zag or smth like that) 3. When the path loops back to the beginning... |
| Define velocity and its units. | Velocity is the rate of displacement per unit tine (m/s, km/h) |
| Define the term vector. | A quantity that has magnitude and direction. |
| Define the term scalar. | A quantity that has magnitude. |
| Classify the following as vector or scalar and apply their corresponding units: Distance Acceleration Force Speed Time Velocity Displacement | Vector: Distance (cm, m, km...), velocity (m/s, km/h), Acceleration (m/s/s, km/h/s), force (N) Scalar: Distance (m, km...), speed (m/s, km.h), time (sec, min...) |
| Examples for when distance is not equal in magnitude to displacement. | 1. When an object changes direction. 2. Irregular path (zig-zag or smth like that) 3. When the path loops back to the beginning... |
| Define velocity and its units. | Velocity is the rate of displacement per unit tine (m/s, km/h) |
| Define the term vector. | A quantity that has magnitude and direction. |
| Define the term scalar. | A quantity that has magnitude. |
| Classify the following as vector or scalar and apply their corresponding units: Distance Acceleration Force Speed Time Velocity Displacement | Vector: Distance (cm, m, km...), velocity (m/s, km/h), Acceleration (m/s/s, km/h/s), force (N) Scalar: Distance (m, km...), speed (m/s, km.h), time (sec, min...) |
| Examples for when distance is not equal in magnitude to displacement. | 1. When an object changes direction. 2. Irregular path (zig-zag or smth like that) 3. When the path loops back to the beginning... |
| Define velocity and its units. | Velocity is the rate of displacement per unit tine (m/s, km/h) |
| Define acceleration and its units. | Acceleration is the rate of change of velocity per unit time. |
| Distinguish between the 4 spheres of the Earth. | Biosphere: all the living things. Lithosphere (geosphere): solid Earth. Atmosphere: all gas. Hydrosphere: all water in all forms. |
| Recognise cycling through the spheres with a focus on carbon. Why does carbon need to be recycled? | Carbon cycle... Carbon needs to be recycled because it's a building block for life and there's a finite amount of it on Earth. |
| Carbon in the atmosphere. | CO2 from respiration, combustion, volcanic activity... Methane CH4 from livestock, decomposition without oxygen. |
| Carbon in the biosphere. | Found in all living things. It's necessary for life. |
| Carbon in the hydrosphere. | Disolved CO2 Calcium carbonate CaCO3 in rocks, limestone, shells, coral. |
| Carbon in the geosphere. | Calcium carbonate CaCO3 in limestone Fossil fuels (coal, oil gas) Decomposed plant and animal material |
| Distinguish between the 4 spheres of the Earth. | Biosphere: all the living things. Lithosphere (geosphere): solid Earth. Atmosphere: all gas. Hydrosphere: all water in all forms. |
| Recognise cycling through the spheres with a focus on carbon. Why does carbon need to be recycled? | Carbon cycle... Carbon needs to be recycled because it's a building block for life and there's a finite amount of it on Earth. |
| Carbon in the atmosphere. | CO2 from respiration, combustion, volcanic activity... Methane CH4 from livestock, decomposition without oxygen. |
| Carbon in the biosphere. | Found in all living things. It's necessary for life. |
| Carbon in the hydrosphere. | Disolved CO2 Calcium carbonate CaCO3 in rocks, limestone, shells, coral. |
| Carbon in the geosphere. | Calcium carbonate CaCO3 in limestone Fossil fuels (coal, oil gas) Decomposed plant and animal material |
| Distinguish between the 4 spheres of the Earth. | Biosphere: all the living things. Lithosphere (geosphere): solid Earth. Atmosphere: all gas. Hydrosphere: all water in all forms. |
| Recognise cycling through the spheres with a focus on carbon. Why does carbon need to be recycled? | Carbon cycle... Carbon needs to be recycled because it's a building block for life and there's a finite amount of it on Earth. |
| Carbon in the atmosphere. | CO2 from respiration, combustion, volcanic activity... Methane CH4 from livestock, decomposition without oxygen. |
| Carbon in the biosphere. | Found in all living things. It's necessary for life. |
| Carbon in the hydrosphere. | Disolved CO2 Calcium carbonate CaCO3 in rocks, limestone, shells, coral. |
| Carbon in the geosphere. | Calcium carbonate CaCO3 in limestone Fossil fuels (coal, oil gas) Decomposed plant and animal material |
| Respiration word equation. | Food + oxygen -> energy, water, CO2 |
| Photosynthesis word equation. | Sunlight + H2O + CO2 -> chlorophyl -. glucose/food (starch) + oxygen gas |
| Analyse the path between spheres through the processes of: photosynthesis, respiration. | Photosynthesis transfers carbon from atmosphere to biosphere. Plants absorb CO2 and convert it into glucose. Respiration moves carbon from biosphere back to the atmosphere. Breaths out CO2. |
| Analyse the path between spheres through the processes of: combustion, fossilisation. | Combustion releases carbon from the geosphere and biosphere back into the atmosphere. When fossil fuels or biomass is burned, stored carbon into CO2 and is released into the wild. Fossilisation transfers carbon from the biosphere to the geosphere. |
| Distinguish between carbon sources and sinks (reservoirs). | Carbon sink/reservoir: where large amounts of carbon is stored. Oceans, soil, forests. Carbon sources: anything that releases carbon into the atmosphere. Car combustion, respiration, volcanoes, bushfires, melting permafrost. |
| Evaluate and describe ways in which humans interact with the carbon cycle and the changes to the sources and reservoirs himan activities have brought about. | Burning fossil fuels releases ginormous amounts of CO2 Deforestation releases stored carbon and removes carbon sinks Livestock adds extra methane to the atmosphere ... |
| Distinguish between weather and climate. | Weather is short term Climate is average lover a long long time. |
| Identify major greenhouse gases. | Carbon dioxide CO2 Methane Nitrous oxide NO Water |
| Explain how the greenhouse effect helps to maintain Earth's ideal surface temperature. | By trapping long wave radiation. Sun heats Earth with shortwave radiation. Earth releases heat as longwave (infrared) radiation. Greenhouse gases absorb and trap the longwave heat. Re-radiate back to Earth. |
| Explain evidence for past and current climate change: Glacial retreat, ice core analysis, pollen record. | Ice core analysis: ice core traps bubbles from thousands of ears ago. It shows past CO2 levels and temperatures. Pollen records: Shifts in pollen types indicate climate changes over time.Can reveal long-term trends in temperature and rainfall patterns. |
| Explain evidence for past and current climate change: Fossil record, sea level. | Fossil record: shows past species and plant distributions and indicates past climate shifts. Sea level changes: rising sea reflects melting ice and warming. |
| Distinguish between global warming and climate change. | Global warming: Focuses on temperature trends. Climate change: long term changes in climate patterns including temperature, rainfall, sea level. Focuses on over all changes not just temperature. |
| Define enhanced greenhouse effect. | The strengthening of natural greenhouse effect caused by increased human emissions of greenhouse gases. |
| Distinguish between natural and enhanced greenhouse effects. | Natural greenhouse effect: natural process that traps some of Earth's heat to keep the planet warm enough for life. Enhanced greenhouse effect: Caused by human activities that add extra greenhouse gases. Traps more longwave radiation than normal. |
| Evaluate human activities impacting the carbon cycle to determine human contribution to EGHE: Deforestation and land use changes, agriculture, livestock | Deforestation : removes trees that acts as carbon sinks and releases stored carbon increasing atmospheric CO2. Agriculture: Ploughing and soil disturbance release stored carbon from souls. Adds CO2 to the atmosphere. Livestock: produce methane. |
| Evaluate human activities impacting the carbon cycle to determine human contribution to EGHE: Rice paddies, fertilisers, use of fossil fuels, car exhausts. | Rice paddies: create anaerobic conditions, producing methane. Fertilisers: release nitrous oxide from soils. Fossil fuels: burning it releases large amounts of CO2 rapidly increasing atmospheric carbon. car exhausts: Emits CO2 and other ghg. |
Created by:
Beatrix Bezzoli