Place ½ teaspoon of baking soda in each large container. If the baking soda is lumpy, first place it on a small plate and use the back of a spoon to break up the lumps. Why is it important to break up the lumps?

True or false, the three major scales used to measure earthquakes are mercalli scale, richter scale and magnitude scale

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.