Living Systems
Define self-sustainable.
Maintaining or able to maintain oneself or itself by independent effort
Light is a form of what type of energy?
Electromagnetic energy
Who invented the foldscope?
Manu Prakash, a bioengineer at Stanford university
Electricity is the flow of what?
Electrons
What is a good method of protecting yourself against germs?
Hand Washing!
Why is decomposition an important component of an ecosystem?
It recycles nutrients within an ecosystem.
In which direction does heat move?
From hot to cold.
Chlorophyll can absorb which colors of light?
Red and blue light.
What is an electrolyte?
An electrolyte is a substance whose aqueous solution contains various ions and thus conducts electricity.
When there is a mistake in the DNA code what do we call this?
A mutation
What are the waste products of cellular respiration?
Water and carbon dioxide.
What is the function of an inclined plane?
The function of the inclined plane is to reduce the effective weight of the object. An object being pulled up an inclined plane requires less force than an object hoisted vertically.
Do protists belong to the animal, plant or fungi kingdom?
None of the above. They belong to the protozoa kingdom.
Magnets have two different poles. What happens when magnets with the like poles are brought together.
The like poles will try to repel each other.
List the primary colors of light?
Red, blue, and green.
What is nonpoint source pollution and name two examples of nonpoint source pollution.
Pollutants that originate from many different sources are known as nonpoint source pollutants.
Some examples of nonpoint source pollution include chemicals and fertilizers from agricultural operations; oil, heavy metals from commercial and industrial operations, household chemicals, paints and solvents, and fecal matter from septic systems and domestic animals.
In terms of Newton's laws of motion, what does acceleration mean?
"Acceleration" means any change in velocity -- slowing down, speeding up, or changing direction.
List three potential negative effects of air pollution.
Global Warming
Acid Rain
Harm to health
Degrading the Ozone layer
How does a maglev train levitate?
The magnetized coil running along the track, called a guideway, repels the large magnets on the train's undercarriage. This repulsion lifts the train 1 to 10 centimetres ( 0.4 to 4 inches) above the guideway.
How can you increase the strength of an electromagnet?
The strength of an electromagnet can be increased by increasing the number of loops of wire around the iron core and by increasing the current or voltage.
What are the three primary functions of a watershed?
1. Captures water from the atmosphere.
2. Storage of rainwater
3. Water moves through the soil to seeps and springs, and is ultimately released into streams, rivers, and the ocean
In terms of transferring heat, what is radiation?
Radiation is the flow of heat carried by photons. Radiation can transfer heat between two objects even in empty space, which is how the energy from the Sun gets to Earth.
Chromatography works through .....
capillary action.
How does a Zinc/Copper battery work?
Zinc is a metal that likes to give its electrons to copper. If you provide the electrons with a solution (called an electrolyte) to help them move to the copper, and you give the electrons a wire in which they can move from the copper back to the zinc, you can produce a circuit and a flowing path of electrical energy.
Define decomposition.
The process by which bacteria and fungi break dead organisms into their simple compounds