Only the strongest live on to pass on their genes. the weak die
Answer:
By designing an experiment where the temperature on the thermometer is measured after a chosen (same) time interval when the thermometer is wrapped with the different materials and placed in the freezer
Explanation:
Experimental design
Materials given: freezer, a thermometer, samples of materials
setup:
1. The freezer is put on and made to remain at a particular temperature, mimicking the winter season.
2. Next, different materials for the coat design with equal dimensions are used to rap the thermometer whose initial temperature has been recorded in the same pattern and the thermometer is placed in the freezer and left for a certain time, which is made constant for the different materials.
3. after the time, the final temperature on the thermometer is recorded.
Result interpretation
The temperature is expected to drop after the time in the freezer, but the material with the smaller change (drop) in temperature indicates that it traps more heat hence is the best material for designing a winter coat
independent variables: type of material used
dependent variables: temperature on the thermometer
control variables: time, dimensions of materials, temperature of freezer, pattern of wrapping.
Answer:
Explanation:
Electric field is a vector quantity whose direction is defined as the direction that a positive test charge would be pushed when placed in the field. Thus, the electric field direction about a positive source charge is always directed away from the positive source.
If the sentences after the question are multiple-choice, I believe it is the second sentence (New information is discovered that contradicts the existing theory).
The appearance of a straight and
rigid "pipestem colon" is characteristic of chronic ulcerative
colitis. Ulcerative colitis is an inflammatory bowel disease that causes the inflammation
and ulcers in the colon. The chronic ulcerative colitis is the rare form of
colitis that affects the entire colon and causes severe pain, profuse diarrhea,
bleeding, fever and inability to eat.