What is studying or working i only one field (this is for science 7th grade)

Which of the following best describes a spiral galaxy? Less than one hundred stars arranged in spherical shape A few thousand planets arranged in an elliptical shape Several billion stars arranged in arms spiraling outwards Several billion planets

Q2. Fill in the blanks: North Pole of a magnet will ... ... North pole of another magnet. South Pole of a magnet will. North pole of a another magnet. Needle of a compass lines up with the ... of a magnet.

A submersible pump is put under the water at the bottom of a well and is used to push water up through a pipe. What minimum output gauge pressure must the pump generate to make the water reach the nozzle at ground level, 71 m above the pump?

Mr. Smith and his wife were trying to move their new chair. Mr. Smith pulls with a force of 30 N while Mrs. Smith pushes with a force of 25 N in the same direction. What is the net force?

Several mountains together form a mountain. A few of these combined form a mountain system. Several systems combined form a mountain, which can stretch thousands of miles in length.

Why would a long series of gradual ramps be better than one short, steep ramp for moving heavy blocks of stone?

Why are some liquids more viscous than others?

If a person weighs 125 lbs, 8oz., how many mg does s/he weigh

An iron rod is: A:a good conductor of heat and electricity, but not magnetic B: magnetic and a good conductor of heat, but is an insulator of electricity C: magnetic and a good conductor of heat and electricity D: not magnetic and an insulator of

Which stage are there homologous chromosomes lines up down the middle of the cell