Answer the following question given this paragraph: To sterilize a 50.0-g glass baby bottle, we must raise its temperature from 22.0C to 95.0C . How much heat transfer is required? 4. The same heat transfer into identical masses of different substances produces different temperature changes. Calculate the final temperature when 1.00 kcal of heat transfers into 1.00 kg of the following, originally at 20.0C : (a) water; (b) concrete; (c) steel; and (d) mercury. Rubbing your hands together warms them by converting work into thermal energy. If a woman rubs her hands back and forth for a total of 20 rubs, at a distance of 7.50 cm per rub, and with an average frictional force of 40.0 N, what is the temperature increase? The mass of tissues warmed is only 0.100 kg, mostly in the palms and fingers. A 0.250-kg block of a pure material is heated from. Q: Rubbing your hands together warms them by converting work into what energy? Choices: - kinetic energy - motion energy - layer energy - thermal energy A:
thermal energy
(Question)
Answer the following question given this paragraph: In science, we need to make observations on various phenomena to form and test hypotheses. Some phenomena can be found and studied in nature, but scientists often need to create an experiment . Experiments are tests under controlled conditions designed to demonstrate something scientists already know or to test something scientists wish to know. Experiments vary greatly in their goal and scale, but always rely on repeatable procedure and logical analysis of the results. The process of designing and performing experiments is a part of the scientific method. Q: In science, we need to make observations on various phenomena to form and test what? Choices: - assumptions - theories - variations - hypotheses A:
(Answer)
hypotheses
Ques: Answer the following question given this paragraph: Humans have been studying the night sky for thousands of years. Knowing the motions of stars helped people keep track of seasons. With this information they could know when to plant crops. Stars were so important that the patterns they made in the sky were named. These patterns are called constellations . Even now, constellations help astronomers know where they are looking in the night sky. Q: What are observable patterns of stars found in the night sky called? Choices: - deformations - latitudes - deviations - constellations A:
Ans: constellations
(Q).
Answer the following question given this paragraph: An ionic bond is the force of attraction that holds together positive and negative ions. It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Figure below shows how this happens. Q: What bond is the force of attraction that holds together positive and negative ions? Choices: - Protonic - Electric - magnetic - ionic A:
(A).
ionic
Ques:Answer the following question given this paragraph: Note that Earth's axis of rotation is tilted. The axis is not perpendicular to the plane of the ecliptic. This plane is the one that solar system bodies are mostly lined up in. Q: What scale measures acidity? Choices: - frequency scale - richter scale - salinity scale - ph scale A:

Ans:ph scale
Answer the following question given this paragraph: Organs of excretion make up the excretory system. They include the kidneys, large intestine, liver, skin, and lungs. Q: Kidneys, large intestine, liver, skin, and lungs comprise which system? Choices: - Muscular system - Digestive system - Lymphatic system - excretory system A:
excretory system