which of the materials would be able to scratch Quartz

Name two instruments that are based on the law of flotation

Glassy and metallic are terms that describe what mineral property? A. luster B. color C. shape D. hardness

The acceleration of a particle as it moves along a straight line is given by a (2t 1) m/s2, where t is in seconds.

Describe one way you can observe gravity in action in the natural world.

Which is a compound machine?

Why does the liquid thermometer work?

What energy do electrons have when they are farther away from the nucleus?

200 525000 lololo Boat A is 10 km north of a port. Boat B is 5 km east of the same port. Boat A sails in a straight line towards boat B. Work out the bearing on which boat A sails.

Is Li greater than He on the periodic table?

White light falls on a yellow filter, if: (a) A green filter is placed behind a yellow filter, what is the colour of the light that will emerge from the green filter?