Science Flashcards
A student in science class drops a permanent magnetic bar and it breaks into two dissimilar pieces. What would happen to the two pieces of the magnet?
When brought together, the north pole of one broken piece would attract the south pole of the other broken piece
Amoebas can live in soil or water. What biological process is most helpful in explaining the metabolism of an amoeba?
Respiration
Respiration is
The central life process during metabolism. Oxygen is taken in allowing stored chemical energy to be released. Respiration takes place within a cell
In what part of the subcellular organelle is genetic material stored?
Chromosomes
Chromosomes
Contain all genetic material. Inside each chromosome is stored the long DNA molecule that carries the coded message that control all inherited traits
Within a natural community of many different plant and animals species, what is most likely to be true?
Each species occupies it’s own niche in the environment
Genotype
Is the genetic makeup of an organism
Continental drift
Is the theory that all continents were once connected into a supercontinent
The moon is dark during
A new moon
Half the moon is lit during
The first and third quarters
What would be most likely effect if the sun, moon, and earth, in that order, or directly aligned?
Increased gravitational pull on the tides
What would be most likely effect if the order sun, earth, and moon were directly aligned?
A lunar eclipse
The color of an object depends on
The colors of light that it reflects
Rust compound
Iron and oxygen elements. (Rust by definition is iron oxide)
A piece of ice of unusual shape is dropped into a large glass of water and instantly floats. What is the best explanation of this occurrence?
The ice has a density of less than 1.0
Process causes the contents of an aerosol can to spray out when the top button is depressed
The movement of molecules toward a lower pressure area
Alcohol boils at
78°C / 172°F
Water boils at
100°C / 212°F
The two main types of energy are
Kinetic and potential
Kinetic energy is
The energy of motion
Potential energy is
Energy that comes from a position
A wound spring and a toy car, a book sitting on top of the desk
A magnetic field surrounds a magnet and is strongest
At the poles (not weakest), but the field force can be exerted around the entire magnet
Heat energy makes molecules move
Faster and expand (take up more space)
Colder molecules move
More slowly and cause most objects to contract (water is an exception)
Seatbelts in a car were invented to address which scientific concept?
Inertia / newton’s first law of motion also known as the law of inertia states that an object at rest tends to stay at rest, and an object in motion tends to stay in motion at the same speed and in the same direction, unless acted on by an unbalanced force
Centrifugal force is
Any force that causes an object to move in a circle. If you spin a bucket full of water around fast enough centrifugal force keeps the water moving in the circle and prevents it from pouring out
Abiotic
Nonliving factors in the environment include such items as soil, water, gases in the atmosphere, temperature, and light
Digestion of food into nutrients is completed in
The small intestine
The breakdown of food in the digestive system takes place in the following series of organs
Mouth > esophagus > stomach > Small intestine > Large intestine > Rectum
In the periodic table of elements, and elements atomic number indicates the number of
Protons
Most of the elements in the periodic table are
Metals
Which metals are magnetic?
Iron and cobalt
Most metals are good conductors of what?
Heat and electricity
