Forces
Forces
Human Dependence on Oceans
Levels of Organization and Energy Pyramids
Chemical reactions and equations
100
What is net force?
The overall forces acting on an object.
100
What is Newton's 2nd law of motion?
force = mass x acceleration
100
What is groundwater stored in?
Aquifers
100
What percentage of energy is kept as we go up the energy pyramid?
10%
100
The substances you start with in a chemical reaction are called ________, and the substances you end up with in a chemical reaction are called _________.
Reactants and products
200
Two forces equal in size and acting in opposite directions on an object.
Balanced forces
200
Newton's First Law is also known as the law of _______
Inertia
200
What is the difference between groundwater and surface water?
Groundwater is stored underground and surface water is stored on the surface of the Earth
200
What is a decomposer?
An organism that breaks down dead organisms to return the nutrients back to the environment.
200
- According to the law of conservation of mass, matter ______________________.
cannot be created or destroyed.
300
60 N to the right
300
Grace accelerates from rest to a velocity of 30m/s in 10 seconds. What is her acceleration?
3m/s^2
300
More boats in the ocean will lead to a(n) _____________ in ocean temperatures.
increase
300
What is the correct order for the levels of organization from smallest to largest?
cell, tissue, organ, organ system, organism
300
List how many atoms of each element there are in this chemical formula C9H1202
and list the number of elements in this chemical formula
Atoms: C=9, H=12, 0=2
Elements: 3
400
The rate of change of position, or the distance traveled, in a period of time.
Speed
400
The same force is applied separately to two objects, Object A and Object B. Object B has twice the mass of Object A. Analyze the acceleration of Object B compared to Object A?
Object B’s acceleration is half that of Object A.
400
List two ways humans can benefit ocean systems.
Limiting water use
Cleaning up
Planting trees
Restoring rivers
Creating laws/policy
400
What is an organ made of?
A group of similar tissues put together to perform a function.
400
Which of the following is a balanced chemical equation?
- a) H2+O2→H2O
- b) H2+O2→2H2O
- c) 2H2+O2→2H2O
C
500
What is Newton's 3rd law of motion?
Every action has an equal and opposite reaction
500
What is an example of Newton's Third Law of Motion?
- B) A rocket launching into space.
- C) A car accelerating down a road.
- D) A ball rolling on the ground.
B
500
List the 4 ways humans impact ocean systems.
Overfishing
Pollution
Agriculture
Land development
500
What type of organism is missing from this food chain?
Sun--> flower--> rabbit--> _________ --> eagle
Secondary consumer
500
Balancing a chemical equation means making sure there are equal numbers of _________ on both sides.
Atoms