Bio Diversity
Matter and Chem Change
Enviro Chem
Electricity
Space
100
What is an advantage of asexual reproduction?
does not require a mate/single parent only
requires less energy
produces more offspring
100
Name 2 ways you know chemical change has occurred?
A solid precipitate, gas, or change in temperature is observed
100
A bag of garden fertilizer has the label “16-21-5.” The three numbers on a fertilizer label represent the percent composition of ____, ____, and _____.
nitrogen, phosphorus, and potassium
100
Using the terms "load", "positive electrode", "negative electrode" and "electrolyte", The four components of the wet cell above are named 1____, 2____, 3____, and 4_____.
1 – positive electrode,
2 – electrolyte,
3 – negative electrode,
4 - load
100
Within the solar system, what measure of distance (based on the average distance from the Sun to Earth) is used?
Astronomical unit (AU's...the distance from Earth to the sun is 1AU)
200
Your boss decides she wants to use genetic technologies to create identical copies of one particular type of red flower. What would be the best method to use?
cloning
200
When compared to non metals, the elements that are metals are found on the ___ side of the periodic table, generally ____ state of mater, and are ____ which means they can bend easily?
Left side, Solid state of matter (except Mercury) and malleable (means they can bend)
200
CFC's (chlorofluorhydrocarbons) are a major atmospheric pollutant and is the primary cause of _____.
depletion of the ozone layer.
200
A vacuum cleaner is connected to a 110-V outlet, and draws 11 A of current. The resistance in the vacuum cleaner is ___________ Ω.
10 ohms
200
A __________________ is a cloud of gas and dust where stars are born.
Nebula
300
A human gamete contains ___ chromosomes
23
300
An unknown ionic compound was discovered to have the formula X2O3. What is the ion charge of the unknown element X?
3+ (there are 3 O2- so to balance this the 2 X ions must be 3+ each)
300
What is a way you can test for the oxygen content in a body of water, such as a river?
look for presence of different types of macroinvertebrates
300
The circuit components described by these symbols are...
Cell/battery, lamp/bulb, switch, resistor
300
Which scientist observed that planetary orbit around the sun is elliptical?
Johannes Kepler
Kepler
400
During sexual reproduction, the sperm unites with the egg in the process of fertilization. What is created by the joining of these two cells?
zygote
400
The chemical fluorine (F2) is found in group 17 of the periodic table. The elements in this group are called ____.
Halogens
400
Phenolphthalein is added to a beaker containing HCl. NaOH is slowly titrated into the beaker until a colour change is observed. What colour does it change to?
Pink
Fuchsia
Magenta
400
A computer uses 480 watts of electricity. If the computer draws 4.0 A, how many volts are needed?
120
400
The apparent shift of a nearby object when viewed from two different positions relative to a distant reference point is called
parallax
500
DNA is housed inside the nucleus in structures called...
chromosomes
500
The chemical formula for acetic acid is HC2H3O2. How many atoms of each element are present?
4 hydrogen, 2 carbon, and 2 oxygen
500
Plant nutrients that are considered major water pollutants are ____ and ____ because they cause eutrophication.
Phosphorus and nitrogen
Phosphates and Nitrates
500
What is the part of the DC Motor that spins?
armature
500
We can use spectroscopes to see light from galaxies. The spectra of this light shows lines similar to light from our sun. With this technology we know the ______ and _______ of other galaxies.
composition (we know the other galaxies are made of hydrogen mostly) and relative direction of travel (the doppler red shift tells us galaxies are all moving away from us)