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Temperature

This category is for questions about the various units and conversions of temperature, as well as the freezing point and boiling point of elements and compounds.

19,212 Questions

What degree does food being cooled must past quickly through which temperature range to reduce pathogen growth?

Food must be cooled quickly through the temperature danger zone of 140°F to 70°F (60°C to 21°C) within a two-hour period to reduce pathogen growth. After reaching 70°F, it should be cooled to 41°F (5°C) or below within an additional four hours. This rapid cooling process helps minimize the time food spends in temperatures where bacteria can proliferate.

What did geologists study to determine the pressure and temperature at which metamorphic rock formed?

Geologists study the mineral assemblages and textures of metamorphic rocks to determine the pressure and temperature conditions during their formation. By analyzing the stability of specific minerals and their reactions, they can infer the metamorphic grade and the corresponding P-T conditions. Additionally, they may use geothermometers and geobarometers, which are tools that provide quantitative estimates of temperature and pressure based on mineral compositions. Field studies and experimental petrology also contribute to understanding the metamorphic environment.

How does the duration of daylight affect temperature?

The duration of daylight affects temperature by influencing the amount of solar energy that reaches the Earth's surface. Longer daylight hours typically allow for more sunlight to warm the ground and atmosphere, leading to higher temperatures. Conversely, shorter daylight hours result in less solar heating, which can lead to cooler temperatures. Seasonal changes in daylight duration, influenced by the tilt of the Earth's axis, are key factors in temperature variations throughout the year.

How hot is the surface of a roof at 100 degrees?

When the air temperature is 100 degrees Fahrenheit, the surface of a roof can be significantly hotter due to the heat absorption and retention properties of materials like asphalt, metal, or concrete. Roof surfaces can reach temperatures of 150 to 180 degrees Fahrenheit or even higher, depending on factors like color, material, and exposure to direct sunlight. This elevated temperature can contribute to heat buildup in buildings and affect energy efficiency.

Why it is important for man to maintain a constant body temperature of 37 degrees celsius?

Maintaining a constant body temperature of approximately 37 degrees Celsius is crucial for optimal enzymatic activity and metabolic processes in the body. Deviations from this temperature can disrupt physiological functions, impair immune responses, and lead to conditions like hypothermia or hyperthermia. Additionally, a stable temperature supports overall homeostasis, allowing organs and systems to operate efficiently and effectively. This balance is vital for maintaining health and sustaining life.

What temperature does cellulose work best at?

Cellulose typically functions optimally at a temperature range of 50 to 60 degrees Celsius (122 to 140 degrees Fahrenheit) when used in enzymatic processes, such as those involving cellulase for biomass conversion. However, the ideal temperature can vary depending on the specific application and the type of cellulose or enzyme involved. Generally, maintaining a controlled temperature within this range enhances the efficiency of cellulose degradation and other related processes.

Why is the temperature scale important?

The temperature scale is important because it provides a standardized way to measure and communicate thermal energy, allowing for consistency in scientific research, engineering, and everyday applications. Different scales, such as Celsius, Fahrenheit, and Kelvin, serve specific purposes in various fields, such as meteorology, cooking, and physics. Understanding temperature scales also helps us interpret and compare data accurately, facilitating better decision-making in areas like health, environment, and technology.

What temperature does an apple start to brown?

An apple begins to brown when it is exposed to oxygen, which can occur at any temperature, but the process speeds up in warmer conditions. Typically, browning starts at temperatures above 32°F (0°C), as enzymes in the apple react with oxygen. To slow down browning, it's best to keep apples refrigerated and limit their exposure to air.

What is the lowest temperature you can work in?

The lowest temperature for safe work conditions typically depends on the type of work being performed and the appropriate safety regulations. For outdoor work, the Occupational Safety and Health Administration (OSHA) recommends precautions when temperatures drop below 20°F (-6°C). Below this threshold, employers should implement measures to prevent cold stress and hypothermia, ensuring workers have proper clothing and breaks to warm up. Always refer to specific industry guidelines and local regulations for the most accurate information.

How you will calibrate a Celsius temperature scale locally?

To calibrate a Celsius temperature scale locally, you can use a reliable reference point, such as the freezing point of water (0°C) and the boiling point of water (100°C) at sea level. First, ensure that your thermometer is accurate by placing it in ice water to verify it reads 0°C, then check it in boiling water to confirm it reads 100°C. If adjustments are needed, you can either recalibrate it according to the deviations observed or use a calibration software if your device supports it. Finally, document any changes made for future reference.

What are examples of unexpected temperature change?

Examples of unexpected temperature changes include sudden cold fronts that can drop temperatures dramatically within hours, such as a heatwave giving way to a snowstorm in spring. Another example is the phenomenon of "urban heat islands," where cities experience higher temperatures than surrounding rural areas, sometimes resulting in unexpected heat waves during typically cooler months. Additionally, unseasonably warm weather in winter due to climate change can lead to rapid temperature shifts.

What is the temperature range from piney woods?

The temperature range in the Piney Woods region, which spans parts of Texas, Louisiana, Mississippi, and Arkansas, typically varies from about 30°F (-1°C) in winter to around 95°F (35°C) in summer. The climate is characterized by hot, humid summers and mild winters, with average annual temperatures generally falling between 60°F (16°C) and 70°F (21°C). Precipitation is abundant, contributing to the lush vegetation typical of the area.

What do the long and short cross-marks represent on a centigrade thermometer?

On a centigrade thermometer, the long mark represents the freezing point of water at 0°C, while the short mark indicates the boiling point of water at 100°C. These marks serve as key reference points for measuring temperature, allowing users to easily identify the state of water at standard atmospheric pressure. The space between these marks is divided into degrees Celsius, providing a scale for more precise temperature readings.

What is highest average temperature according to the data?

The highest average temperature recorded globally is typically around 16 degrees Celsius (61 degrees Fahrenheit), although specific regions may experience higher averages. This data can vary year by year due to climate change and other factors. For the most accurate and up-to-date information, it's best to consult a reliable climate database or meteorological source.

What is the temperature of tropopause?

The temperature of the tropopause varies with latitude and season, generally ranging from about -50°C (-58°F) in the tropics to around -70°C (-94°F) in polar regions. The tropopause is the boundary between the troposphere and the stratosphere, where temperature stops decreasing with altitude and begins to increase. This layer plays a crucial role in weather patterns and the distribution of atmospheric pollutants.

What is 36 temperature in Fahrenheit?

To convert 36 degrees Celsius to Fahrenheit, you can use the formula ( F = \frac{9}{5}C + 32 ). Applying this, ( F = \frac{9}{5} \times 36 + 32 ), which equals 96.8 degrees Fahrenheit. Therefore, 36 degrees Celsius is equivalent to 96.8 degrees Fahrenheit.

When will Bakersfield break 100 degrees?

Bakersfield typically experiences its hottest temperatures during the summer months, particularly in July and August. While exact predictions can vary, it is common for the city to first break the 100-degree mark in late spring or early summer, often in late May or June. For precise forecasts, it's best to check local weather reports closer to that time.

What is the current temperature in the Taipei?

I'm unable to provide real-time data, including current temperatures. For the latest weather updates in Taipei, please check a reliable weather website or app.

Is Washington a cold or hot place?

Washington's climate varies significantly depending on the region. The western part, including Seattle, experiences a mild, temperate climate with wet winters and cool summers, while the eastern part tends to be hotter and drier, particularly in summer. Overall, Washington can be both cold and hot, depending on the specific location and time of year.

What does -20 degrees C equal in F?

To convert -20 degrees Celsius to Fahrenheit, you can use the formula ( F = \frac{9}{5}C + 32 ). Plugging in -20 for C gives ( F = \frac{9}{5}(-20) + 32 ), which simplifies to -4 degrees Fahrenheit. Thus, -20 degrees Celsius is equivalent to -4 degrees Fahrenheit.

Is 37.75 degrees temperature high?

A temperature of 37.75 degrees Celsius (99.95 degrees Fahrenheit) is slightly above the normal body temperature range, which is typically around 36.1 to 37.2 degrees Celsius (97 to 99 degrees Fahrenheit). While it is not considered a high fever, it may indicate a mild elevation in body temperature. If accompanied by other symptoms, it may warrant further attention.

What is the approximate pressure inside a pressure cooker if the water is boiling at a temperature?

The pressure inside a pressure cooker typically ranges from 15 to 20 psi (pounds per square inch) above atmospheric pressure, which allows water to boil at temperatures between approximately 250°F (121°C) and 260°F (127°C). This elevated pressure raises the boiling point of water, enabling food to cook faster. The exact pressure depends on the specific model of the pressure cooker and the desired cooking temperature.

Which area to be check interpass temp?

The interpass temperature should be checked in the area of the weld joint, particularly on the base metal adjacent to the weld. This ensures that the material is within the specified temperature range to avoid issues such as hydrogen cracking or poor weld quality. It is essential to monitor the temperature between passes during multi-pass welding to maintain consistency and integrity in the joint.

Looking at the line plots on your graph describe how boiling point and melting point vary with respect to atomic number?

In general, the boiling and melting points of elements tend to increase with atomic number within a group on the periodic table due to increasing atomic mass and stronger van der Waals forces. However, across a period, these trends can vary; for instance, melting and boiling points may rise to a peak in the middle of the period and then decrease. This is influenced by changes in atomic structure, such as the type of bonding present and electron configuration. Overall, while there is a trend, exceptions do exist based on the specific properties of the elements involved.

Where is the hot gril?

The phrase "the hot girl" can refer to various contexts, such as a specific person or a general concept of attractiveness. If you're looking for someone specific, it would depend on the social setting or location you're in. Otherwise, beauty is subjective and can be found everywhere, depending on individual preferences. Could you clarify what you mean or provide more context?