Mrs. Dodge's class is studying minerals. Mrs. Dodge wants her class to complete a test to find out the color of minerals found in certain rocks. Which test does Mrs. Dodge want her class to complete?
(idk why it says collage im in middle school)

A) smell test

B) taste test

C) streak test

D) hardness test

What element breaks down into yttrium-90?

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.