1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Veseljchak [2.6K]
3 years ago
11

Alysha wants to test the effect of different materials on the melting rate of ice. She finds the initial mass of four pieces of

ice. She then covers three pieces with either tinfoil, plastic wrap, or paper. The fourth piece is left uncovered.
After 30 minutes, Alysha calculates the final mass of each piece of ice to determine which melted the fastest.
What are the independent and dependent variables in Alysha's experiment?

a) The dependent variable is the type of cover material, and the independent variable is the mass of the ice.
b) The dependent variable is the mass of the ice, and the independent variable is the time the ice takes to melt.
c) The dependent variable is the mass of the ice, and the independent variable is the type of cover material.
d)
The dependent variable is the time the ice takes to melt, and the independent variable is the type of cover material.
Biology
1 answer:
Tanzania [10]3 years ago
8 0

Answer:

In the experiment conducted by Alisha to test the effect of different materials on the melting rate of ice, the dependent variable is the mass of the ice, and the independent variable is the type of cover material.

Explanation:

During an investigation or experiment, the dependent variable is the one whose changes will be studied, while the independent variable is able to influence the changes of the dependent variable.

In the case where it is wanted to <u>measure how different cover materials affect the rate of ice melting</u>, the dependent variable is the mass of ice and the independent variable is the coverage material, capable of affecting the time it takes for the ice to melt.

Learn more:

Dependent and independent variables brainly.com/question/967776

You might be interested in
Use the following words to label the image below. Not all words will be used.
Vikentia [17]
Okay i downloaded the image, marked it up and will message it to you

4 0
3 years ago
\6. List and BRIEFLY explain the methods of determining fingerprints? (PLZ HELP I HAVE A QUIZ TOMORROW)
spayn [35]

Answer:

There are number of methods for determining the fingerprints. However, most commonly used methods are:

  • Photography
  • Alternate Light Source
  • Cyanoacrylate

Explanation:

Determination of fingerprints is an important method used in forensic science.  There are generally three types of fingerprints that are to be determined, namely latent fingerprints, patent fingerprints and plastic fingerprints. There are numerous methods used for the determination of fingerprints. However, most commonly used methods are:

<u>Photography:</u> Photography is direct or straightforward method that is used to determine the patent fingerprints. The image is photographed in a high resolution with the help of forensic measurement scale used as a reference.

<u>Alternate Light Source Method:</u> In this method the light source or LED is used of a particular wavelength in order to determine the latent fingerprints.

<u>Cyanoacrylate:</u> Cyanoacrylate processing is also known as super glue method or fuming method, which involves exposure of cyanoacrylate vapors to the non-porous surface from where the fingerprints are to be obtained.

5 0
3 years ago
An animal cell lacking carbohydrates on the external surface of its plasma membrane would likely be impaired in which function?
PilotLPTM [1.2K]
An animal cell lacking carbohydrates on the external surface of its plasma membrane would likely be impaired in CELL TO CELL RECOGNITION.
Carbohydrates have diverse functions, one of their functions is that they serve as a recognition signal at the surface of cells.
Carbohydrates located on the surface of cells enable cells to recognize and  communicate with one another.
4 0
3 years ago
while observing an elodea plant cell through a microscope a student noticed a small moving greendisk these organelles are most l
Drupady [299]
Answer:  "photosynthesis" .
________________________________________________________
<u>Note</u>:  These small, moving "green disks" seen while observing an <em>Elodea</em> plant cell—under a microscrope— are "chloroplasts".   The "chloroplasts" are organelles that ar responsible for "photosynthesis" .
_________________________________________________________
6 0
3 years ago
AH PLEASE HELP ME, 80 POINTS
Dennis_Churaev [7]

1.Water evaporates in the presence of sunlight.

(hydrosphere)


2.Volcanoes release a large amount of gases and other matter during eruption.  

(lithosphere)


3.Lightning causes nitrogen molecules to be split and carried by rain.

(hydrosphere)


4.Plants release water vapor through their leaves during transpiration.

(biosphere)


Hope this helps!

5 0
3 years ago
Read 2 more answers
Other questions:
  • What does crop rotation do?
    10·2 answers
  • Is a fat replacer used in food processing that can bind to fat-soluble vitamins and thereby reduce their absorption?
    10·1 answer
  • Mycorrhizae enhance plant nutrition mainly by ________.
    6·1 answer
  • Which is an example of science playing a role in developing technology
    11·2 answers
  • What is a major difference between facilitated diffusion and active transport?
    8·1 answer
  • Which three processes are methods of genetic recombination?
    10·1 answer
  • A 77-year-old woman is concerned because she has occasionally found her husband sleepwalking in the last several weeks. what is
    10·1 answer
  • When Edna's great-grandfather returned from World War I, the family recalls that he would sometimes think that he
    15·2 answers
  • PLEASE HURRY UP IM TIMED. Genetic modification is a method farmers use so their crops are resistant to disease or cold temperatu
    14·1 answer
  • Salivary amylase is an enzyme released from the salivary glands that breaks some of the chemical bonds in?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!