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they know because they have proved that there are somethings called molicules and they are all scrunched up together and they try to take up as much room as possible! and if they for example when you boil the kettle and all the steam comes out if there are molicules near they will move all about like mad because of the heat and when it is cold they are all together but when they feel the steam the particles separate!
What else can I help you with?
What do scientists call the change in species over long periods of time?
Evolution is the change in species over long periods of time.
What is the factor that scientists change in controlled experiment is the?
the anwer is a variable( the thng that will change over time in the experiment
What is found on the surface that proves the sun rotates?
Scientists were able to prove that the Sun rotates by observing the movement of sun spots over time.
What do scientists use fossil evidence to prove?
Scientists use fossil evidence to prove the existence of organisms that lived in the past, how life has evolved over time, the environmental conditions of ancient ecosystems, and the relationships between different species. Fossils provide valuable information about the history of life on Earth and help scientists reconstruct evolutionary pathways.
How to prove that there are brass in sand?
To prove that there are brass particles in sand, you can perform a simple experiment by using a magnet. Brass is not magnetic, so if you pass a magnet over the sand and some particles are attracted to the magnet, it indicates the presence of a metal like brass in the sand. You can then separate the brass particles from the sand using the magnet as proof.
What are 2 properties of a liquid?
it can change shape and the particles can move over each other.
How do particles change over time?
this is bcos,they get constantly subjected to friction,pressure,temperature which has drastic effect on their size and shape and after a long period of time their properties get changed.
Why do you have to change the oil filter?
The oil filter is there to trap any tiny particles that are in the oil. You change it because it becomes dirty over time. Change the oil at every oil change.
True or false Lanmark was among the first scientists to recognize that living things have change over time?
True
How do scientist discover information about the earth's past?
Scientists discover information about Earth's past by studying rock layers, fossils, ice cores, and sediment cores. These materials provide evidence of past environments, geological processes, and climate change. By analyzing these samples, scientists can reconstruct Earth's history and understand how it has changed over millions of years.
Who discovered the subatomic particle?
The concept of subatomic particles emerged in the late 19th and early 20th centuries through the research of scientists such as J.J. Thomson, Ernest Rutherford, and Niels Bohr. The discovery of specific subatomic particles like the electron, proton, and neutron can be attributed to a combination of experimental observations and theoretical advancements by multiple scientists over time.
How can you prove that air exists between solid particles?
You can prove that air exists between solid particles using a simple experiment. For instance, if you take a container filled with small solid particles, like sand, and pour water over them, you'll observe that the water doesn't fill the container completely. This is because the air trapped between the particles prevents the water from occupying all the available space, demonstrating the presence of air in the gaps between the solids. Additionally, techniques like measuring the volume of solid particles before and after adding water can quantitatively show the volume of air present.
