Electricity
What is the unit of Resistance?
Omega/Ohm
What is a food chain?
A single pathway describing energy transfer between 1 consumer and the next
Whats the chemical symbol for Oxygen
O
Which neuron is responsible for detecting change?
Sensory
Is the IV the thing you measure? True or False
False
What is the formula for Ohm's Law?
V=I x R
How much energy is transferred from one trophic level to the next
How many valence electrons are there in an atom of the 16th element Sulfur?
6
Which three neurons work together in the Nervous System?
Sensory, Inter, Moto
When do you use a bar graph?
When doing an experiment with distinct categories.
Explain the differences between a series and parallel circuit in terms of pathways.
The series circuit is a single pathway, while a parallel circuit has more than 1.
Which group of organisms is primarily responsible for converting inert atmospheric nitrogen into forms like ammonia that are usable by plants?
Nitrogen-fixing bacteria
What does a neutralisation reaction create as products?
salt and water
What is the name for the spine and brain?
CNS
What is a hypothesis?
A prediction about what you think will happen in an experiment.
A simple electric circuit contains a resistor with a resistance of 12 Ohms connected across a 6V battery. What is the current?
0.5A
Compare a predator - prey relationship to a symbiotic relationship
Predator/prey is where one organism consumes the other whereas symbiotic relationships is where both organisms are in close proximity to each other and rely on each other to survive.
What is the ionic compound produced from reacting Sodium ions with Oxygen Ions
Na2O
What is the role of the Interneuron?
Connect sensory and motor neurons within the central nervous system to handle thinking, learning, and reflexes
What is validity?
Whether an experiment fairly tests what it is supposed to test.
Why are household electrical appliances wired in parallel rather than in series?
If the circuit is broken, all the other appliances on the other pathways can function
Which terrestrial biome is characterized by a permanently frozen subsoil layer known as permafrost, extremely low precipitation, and low-growing shrubs and mosses?
Tundra
Balance the following chemical equation:
__ N2 + ___ H2 -> ___ NH3
Answer: _1__ N2 + _3__ H2 -> _2__ NH3
How do Neurons communicate with each other?
An electrical signal travels down a neuron's axon and releases chemicals called neurotransmitters across a tiny gap called a synapse to the next cell.
What is the difference between accuracy and reliability?
Accuracy is how close a measurement is to the true value, while reliability is how consistent repeated results are.