Question

Scientific Evidence (7th Grade)

Answer 1

A student would like to determine how heating a liquid changes its volume. The student hypothesizes that the liquid will increase in volume. The following list shows the steps taken by the student in order to test the hypothesis.

1. Select the liquid to test.
2. Place the liquid in a sealed container.
3. Use a Bunsen burner to heat the liquid by 10°C.
4. Measure the volume of the liquid.
5. Record the results.

What is wrong with how the student conducted the investigation?

A.) The length of time it took for the liquid to be heated should be measured.
B.) The hypothesis was not valid because it is impossible for liquids to change in volume.
C.) The volume of the liquid should be measured before it is heated.
D.) The student should have increased the temperature of the liquid by more than 10ºC.

Answer 2

@malcolmmcswain

Answer 3

What do you think?

Answer 4

I have absolutely no idea... ;-;

Answer 5

Nvm I got a new question now... -_-

Answer 6

Ok... so you no longer need my help on this Q?

Answer 7

Ed has two citrus trees at his home. He keeps one outside on a shaded patio, and the other indoors near a large window and a lamp. The indoor tree receives more light and experiences more stable temperatures than the outdoor tree.

He noticed that the indoor tree grew faster and produced bigger oranges than the outdoor tree. He installed a grow-lamp near the outdoor tree so that it would receive as much light as the indoor tree, but there was no change: the indoor tree continued to outgrow the outdoor tree.

Based on this investigation, what would be the next logical question that Ed should address?
A.) How does the weight of a citrus tree relate to its height?
B.) How does temperature affect the citrus trees?
C.) How does the amount of watering affect the growth of citrus trees?
D.) How does the amount or type of soil affect the growth of citrus trees?

Answer 8

Once again, what is your best guess?

Answer 9

C.

Answer 10

Well, the trees are being grown indoor vs outdoor. Which variable might change in these two different scenarios to produce a different outcome?

Answer 11

D? :/

Answer 12

What would most likely be different indoors than outside?

Answer 13

Idk... I'mma just go through it. :/

Answer 14

It's B, I believe.

Answer 15

k thx anyways