What Is a Temperature Gradient? — Passage
Have you ever walked from a sunny sidewalk into the shade and felt a sudden change in temperature? That quick change is caused by something called a temperature gradient.
A temperature gradient is the difference in temperature between two places that are close to each other. When heat moves from a hot area to a cooler one, it follows the temperature gradient. The bigger the difference in temperature, the stronger the gradient.
Think about a metal spoon in a hot cup of tea. The bottom of the spoon, touching the tea, gets very warm. The top of the spoon, sticking out in the air, stays cooler. The temperature changes along the length of the spoon. That change is the temperature gradient. Heat moves up the spoon, from the hot end to the cool end.
Temperature gradients can happen in many places. In the ocean, warm water near the surface meets colder water below. In weather systems, warm air and cold air create gradients that can cause wind, clouds, and even storms!
Understanding temperature gradients helps scientists study how heat moves in the world. Engineers also use this knowledge to design buildings, machines, and even clothing that keep us comfortable.
Temperature gradients are all around us. From cooking food to studying the weather, they help us understand how heat flows and how to control it in everyday life.
Fun Fact: Earth's surface has its own temperature gradient! As you go deeper underground, the temperature rises. That’s why deep caves and mines are warmer than the surface.
What is the main idea of the passage?
Temperature gradients only happen in the ocean.Temperature gradients are useful for cooking.Temperature gradients explain how heat moves.Engineers use temperature to study caves.What causes a temperature gradient?
A lack of sunlight.A difference in temperature between two nearby places.The Earth's magnetic field.The movement of clouds.What example from the passage shows a temperature gradient in action?
A cold drink in the fridge.A fan blowing air.A metal spoon in hot tea.A sunny beach in summer.In the passage, what does the word gradient most likely mean?
A surface or texture.A sudden movement.A gradual change.A weather pattern.According to the passage, why is the bottom of the spoon warmer than the top?
The spoon is made of plastic.The tea is being stirred.Heat moves from the hot tea to the cooler air.The spoon is being heated by the sun.Which of the following is a result of temperature gradients in weather systems?
Mountains forming.Clouds and storms developing.The sun setting.The moon cooling.Why is the temperature higher deeper underground, according to the passage?
There is less air underground.The sun shines underground.The Earth has its own temperature gradient.The air gets trapped in rocks.What is one reason scientists and engineers study temperature gradients?
To predict solar eclipses.To design tools that keep people comfortable.To make air conditioners colder.To help animals adapt to climates.Related Content
