Question

I need help!!!!!!!

Answer 1

One group of students did an experiment to study the movement of ocean water. The steps of the experiment are listed below.
Fill a rectangular baking glass dish with water.
Place a plastic bag with ice in the water near the left edge of the dish.
Place a lighted lamp near the left edge of the dish so that its light falls directly on the plastic bag.
Put a few drops of ink in the water.
The student did not observe any circulation of ink in the water as expected because the experiment had a flaw. Which of these statements best describes the flaw in the experiment?

Not enough ink was added.
Not enough water was taken.
The dish was too small for the experiment.
The lamp and the ice bag were at the same place.
@Festinger plzzz help

Answer 2

@genius12 I really need your help buddy!!

Answer 3

@genius12 and @Festinger you think you can help??? plzzz

Answer 4

The lamp and the ice bag were at the same place?

Answer 5

I thought it could be A but not sure?

Answer 6

I thought it would be A as well. It's just the way the experiment is described here in words simply doesn't tell me too much but I would go with A as well I think. But if this experiment was presented was more clearly, my answer could change.

Answer 7

Water currents move partly because of temperature differences. Putting the ice and light source a the same side, if anything, tries to demonstrate the rising water levels due to green house effect.

Answer 8

I really have no clue to go with A or D

Answer 9

For currents to be set up, there needs to be a warmer region, and a colder region. Putting the lamp and ice at the same place will not create that temperature difference for currents.

Answer 10

So how sure do you think you are for answer D

Answer 11

Does there need to temperature difference

Answer 12

I think there needs to be movement

Answer 13

So. Coriolis effect turns the water currents?

Answer 14

Yeah true so I should go with D I think you're right!

Answer 15

coriolis? lol

Answer 16

I need help with another one @Festinger

Which of these statements is correct about P and S seismic waves?

Both P and S waves travel along Earth's surface and their amplitude decreases with depth into Earth.
Both P and S waves travel with the same speed through Earth and their amplitude increases with time.
P waves are radiated along a single direction but S waves are radiated along all directions.
P waves change the volume of the medium through which they travel but S waves do not change the volume of the medium.

Answer 17

coriolis is how things seem to bend off course if shoot if over a large distance. it has to do with the earth's rotating frame. though it affects currents too, so does temperature.

Answer 18

Okay I see

Answer 19

P waves change the volume of the medium through which they travel but S waves do not change the volume of the medium.

mainly because p waves are longitudinal waves like sound waves, while S waves are transverse waves and travel along the surface of the earth.

Answer 20

Thanks!!!!!!!!!!! you are soooo helpful to meee :) :-)

Answer 21

Which of these is most likely to happen to an atom when there are imbalances between its strong and weak nuclear forces?

it will become stable
it will absorb electrons
it will undergo radioactive decay
it will transform electrons into protons
@Festinger

Answer 22

I said C but just making sure

Answer 23

i would pick that too but I am not so sure. i haven't had a course which treats what happens when there are strong-weak imbalances, but C is a good guess.

Answer 24

Thanks!!!! :) how about this:

Models of the solar system are used to

make theories on space permanent
make objects in space non-observable
explain difficult concepts about space
scale up representations of objects in space

Answer 25

explain difficult concepts about space

Answer 26

Thats what I put too!!!!!

Answer 27

The laws surrounding the motion of planets in our solar system

can be replaced by new laws
describe what happens in nature under certain conditions
prove that theories on space are non-testable
can be used to prove that theories on gravity are non-observable

Answer 28

describe what happens in nature under certain conditions

Answer 29

Thank you!!!!!!!

All scientific theories on the solar system are based on

biased scientific data
non-testable facts
non-observable information
study of current evidences

Answer 30

study of current evidences

Answer 31

The first three steps in the formation of the sun are listed below.
A cloud of gas and dust called nebula spins slowly.
The nebula collapses due to condensation of gases.
The cloud spins faster as it collapses.
Which of these statements best describes the next step in the formation of the sun?

The contracting nebula flattens into a disk with a bulge at the center.
The gas particles in the nebula repel each other and move apart.
The nuclear fission of the gas molecules releases large amount of energy.
The sun is created at the outermost portion of the condensed nebula.
@genius12 I need your help again plzzz...

Answer 32

I put C, but not sure @genius12