validation test

• a hypothesis must include an if...then... statement with the dependent variable and the independent variable
• an independent variable is getting changed
• the dependent variable is the variable getting measured and is affected by the independent variable
• controlled variables are variables that are kept the same
• validity is the accuracy of the experiment and whether it measures what it is intended to measure.
• reliability is the consistency of the experiment's data and whethe there are any outliers
• an outlier is a data point that is significantly different from the other data points in the data set
• to calculate an average you must add all data and divide by the number of data
• a conclusion is a summary of the experiment and whether your hypothesis is correct and if the experiment was reliable and valid or not
• igneous rocks are formed from magma that cools and crystallises either at volcanoes on the surface of the Earth or while the melted rock is still inside the crust
• igneous rocks can have many different compositions depending on the magma they cool from
• extrusive rocks are formed on the surface of the Earth from lava
• intrusive rocks are formed when magma cools and solidifies within the crust of the Earth
• magma is a molten rock that is under the earth's surface
• when magma rises from the ground, it is called...


  lava
• the faster the cooling rate, the smaller the crystals grow
• the slower the cooling rate, the bigger the crystals
• igneous rocks can be classified into two types based on how they form.
• Extrusive rocks are formed by fast-cooling magma or lava
• Intrusive rocks are formed by slow-cooling magma or lava