Carbon Cycle & Earth’s Spheres
Name the four Earth spheres.
Atmosphere, Hydrosphere, Biosphere, Geosphere (Lithosphere).
What does the atomic number tell us?
The number of protons in the nucleus of the atom.
System transporting oxygen?
Circulatory system
What is a hypothesis?
Testable prediction.
Unit of energy?
Joule
Which process removes CO₂ from the atmosphere?
Photosynthesis
What is a physical change?
No new substance forms.
Nerve cells that transport the signal from the effector to the brain.
Sensory neuron
Independent variable?
Variable that is changed.
Heat transfer method requiring contact between atoms.
Conduction
Burning fossil fuels moves carbon from which sphere to which sphere?
Lithosphere → Atmosphere
Signs of chemical reaction?
Colour change, gas, precipitate.
Define homeostasis.
Maintain stable internal conditions.
Why repeat trials?
More reliable results
Heat transfer method based on the density of a liquid or gas.
Convection
How does respiration contribute to the carbon cycle?
Releases CO₂ into the atmosphere
Why do we need to balance equations?
To adhere to the Law of Conservation of mass.
Organ controlling blood glucose?
Pancreas.
Dependent variable axis?
Y axis
Direction of heat transfer
From hot to cold
How does the hydrosphere interact with the atmosphere in the carbon cycle?
Oceans absorb CO₂ from the atmosphere
Word equation for combustion?
Fuel + oxygen → Carbon dioxide + water
Body cooling response?
Sweating.
Accuracy vs precision?
Accuracy = truth; precision = repeatability.
True or False? Light travels in a straight line
True