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ISAT Question Form
Page 8-24 Perfection Learning:
1) D - Genes are coded for specific traits
2) A - The Cerebrum (Brain) and Spinal Cord sense and process information.
3) A - Fossils show how animals have evolved over time. They compare fossils to see similarities and differences.
4) B - if you have Ll and ll you will get 50% Long Tailed and 50% short. However, no offspring will be "purebred"
5) B - Molecules in a gas stage move around freely (and usually fast) and aren't really connected to each other.
6) C - Remember, a warm front can be remembered as half a circle like the sun. The sun is warm... Cold fronts can be remembered by triangles like an icicle.
7) D - Refraction modifies the angle of light, though doesn't bounce it back at a perfect angle.
8) A - Arctic ecosystem is cold. Therefore, thick fur would help the animal.
9) D - The stamen produced pollen. You can see this part if you look up close at a flower.
10) A - Nitrogen Cycle
11) C - 23. Meiosis cuts the number in half. Therefore, if you had 46, half is 23.
12) A - Increase in foxes. Rabbits eat grass. More Grass = More food for rabbits. Rabbits make more babies. Foxes eat rabbits. More rabbits = More food for foxes. Foxes make babies...
13) D - Chromosome. Chromosomes are made up of DNA. Think of chromosomes as the suitcases for DNA.
14) A - Since both tuna and salmon compete for food, there will be a decrease in both populations. Just as in human situations, when we don't cooperate and help each other, both people get hurt in a way.
15) B - Plants develop fruit which have seeds. Animals eat fruit and their fecal matter fertilizes the seed. Animals transport the seed to another area away from the tree.
16) C - Decline in the usually food supply. Lets pretend Coca-Cola is your favorite soda, but the store ran out of Coca-Cola or priced a single can of it at $40.00. However, there is Pepsi which is still cheap and plentiful. You will probably drink the Pepsi even though you usually wouldn't.
17) A - Think of it as a suitcase with folded clothing.
18) B - Condensation occurs when a gas looses energy.
19) B - Flowers are for reproduction, Leaves are for photosynthesis.
20) D - An object in motion has kinetic energy, however as it slows down it looses kinetic energy. However, due to the law of conservation of energy the kinetic energy is converted into potential energy since it gained height. If you remember, Potential energy deals with mass and height.
21) D - Pollination help spread genetic material of plants.
22) C - Visible light makes up only a small portion of the spectrum. However, you can see that part so you might assume that it makes up a lot.. However, think of radio waves, microwaves, infrared rays, x-rays, gamma rays etc...
23) A - Neutrons are Neutral... It's in the name.
24) A - Refraction occurs at an unique angle.
25) A - If a boat speeds up (Accelerates, newtons second law) from 30 to 55, there is a 25 meter difference. However, since it took 10 seconds we have to do some math. We need Meters per one second, not 10 seconds. If we move the decimal from 10 over to the left once, we must do the same to 25, changing it to 2.5.
26) B - Force = Mass x Acceleration
27) C
28) C - Wedge. An Axe head wedging wood causing it to split.
29) D - Density is how much stuff you have in a given area. If it is less dense than water, it will float.
30) D - Amoeba is a one celled organism.
31) B - Remember Darwin from November? We learned about Galapagos islands and how the birds adapted over time due to types of food sources.
32) A - Mass and Weight ARE NOT equal on Earth. Weight = Mass x Gravity.
33) B - Gravitational pull to be exact.
34) A - Streambed erosion causes sides of a mountain to fall apart over time.
35) C - Light does not travel the same speed through all material. It could also be refracted etc...
36) B - Just follow the diagram...
37) C - Animals adapt to their environment, if you separate two groups completely they will uniquely adapt. In theory this is one reason why humans have different skin colors. Groups of people who migrated to regions without much sunlight needed lighter skin to allow for Vitamin D development. People in hot and bright areas kept darker skin shades since they needed protection from the sun, and since it was so sunny Vitamin D was produced even with dark skin.
38) C - We understand how technologies might effect water sources... however we don't always do what's in the best interest of it...
39) C - Clouds themselves do not cause lightning.
40) D - 3/4 or 75% of the planet is covered by water. There really isn't much land in comparison. However, most of the water is saline or salt based.
41) C - Think of the flashlight example from class. The moon shows when it reflects light onto Earth.
42) C- Moons gravity affects tides.
43) C - Commonalities between samples.
44) C - Neptune is the only outer or gaseous planet on the list...
45) A - Tilt causes seasons.
46) C - Summer Solstice
47) A - Sun is average sized.
48) D - Ice ages aren't directly correlated with plate tectonics.
49) D - Japanese Beetle
50) B - Plants need light energy.
51) A - Petiole.
52) C - Carrot is a taproot... one big root.
53) A - asexual causes a clone.
54) A - Tundra is cold.
55) C - The ice is physically melting.
56) A - Chloroplasts are unique to plants.
57) C - Sperm and Egg is fertilization.
58) A - g/mL... 25g / 5 mL = 5
59) D - Same amount of atoms, just combined in a new order
60) D - Plasma is very hot.
61) A - Atomic Mass
62) D - Conducting to make a closed complete circuit.
63) C - NaCl is table salt.
64) B - Reflection = same angle.
65) D - H202 is not an atom. An atom would be a single H or a single O
66) D - Food Webs show interdependence.
67) C - A single atom has the properties of the element of Carbon... That's what makes it A CARBON ATOM.
68) A - Acids are sour.
69) B - Matter cannot be created or destroyed, just converted.
70) A - Conduction, direct touch.
71) C - Lambda is wave length.
72) A - Nucleus contains genetic information.
73) D - IN order...
74) B - Speed is always some type of distance (Here it is meters) over some type of time (here they would use seconds).
75) C - 4.6 Billion years is the approximate age of Earth. Just a common fact / knowledge question.
76) D - Half of genetic information comes from each parent in sexual reproduction.
77) D - Plates are always moving in some fashion.
78) B - Valleys.
79) C - The core is very metallic, mostly iron (Fe).
80) C - Common Knowledge on what a light-year is.
Remember, use the form if you are confused!
Set 1 Page 69-74:
1) B - All experiments that follow the scientific method should have these.
2) C - Measurement. Weighing in Grams is a measurement.
3) D - Travis has a drink next to poison, he can accidentally ingest.
4) B - Mass of a Beaker would be done on a scale
5) A - Sensors for light measure light intensity
6) C - All other factors should be "Controlled" (Kept the same) except for light if you want to modify (independent variable) light.
7) B - Sales wouldn't be hurt if the machine is cleaned on Sunday.
8) C - Generalizing based on a larger sample size
9) C - You don't want a hot pot holder to melt in your hands...
10) D - The only conclusion you can make is about the mess since one has an open container of ink.
11) A - It's useful. Negative answers are not always the best choices (B-D)
12) B - Heavy weight car won the race.
13) D - Katrin can reproduce the experiment since Josh used accepted measurement standards.
14) A - Scientific work is reviewed by other scientists / peers.
15) C
16) A
17) A
Page 115-119
1) B
2) C
3) A
4) A
5) C
6) B
7) A
8) A
9) A
10) C (1/2 the amount from the beginning - Meiosis)
11) D
12) C
13) A
14) D
15) A
16) C
17) C
18) A
19) A
20) D
21) A
22) B
23) D
24) C
Page 145-149
1) B
2) A
3) C
4) C
5) A
6) C
7) B
8) D
9) C
10) C
11) C
12) B
13) D
14) C
15) B
Student: I would like to know more about mitosis and meiosis
Mitosis and Meiosis can be confusing for two reasons. They both have something to do with making copies, and they both sound very much alike.
Mitosis:
Is when a cell makes an exact copy of itself. Think of this as a copier where you scan a paper and another copy comes out. What you get is called the daughter cell.
Now this daughter cell is a clone of the original. This is how you replenish the cells in your own body! Another term to remember with mitosis is asexual reproduction.
Meiosis:
Is when a cell is copied with half its information. Why would anyone want half a copy of something? This has to do with sexual reproduction. 1/2 of the information comes from the "mom" while the other half comes from the "dad". These Cells are known as the egg and sperm cells or "gametes". These cells are just like containers with half of the ingredients for a full cell. Once they come together mitosis starts to happen.
So why is meiosis even here? Is it 100% needed? Actually the answer is no. However, meiosis creates diversity within a species. It allows for mixing of genetic code or directions. If there was only Mitosis we would all look like clones of each other. There are of course a bunch of other reasons for meiosis too, but that's the basics.
Remember, ISAT Science is 3/6/2012.
Some Suggestions!
Frustration and anger can happen when you don't take time to breathe and read the questions slowly.
READ THE QUESTION FIRST. Make sure you are answering the question and not something that sounds scientific so to speak. I can not stress enough when we go over answers and students change their answer correctly when all I do is read the question out loud.
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