Answer the following question given this paragraph: Electric substations have several functions. Many substations distribute electricity from a few high-voltage lines to several lower-voltage lines. They have electric transformers, which use electromagnetic induction to change the voltage of the current. Some transformers increase the voltage; others decrease the voltage. In the Figure below , you can see how both types of transformers are used in an electrical grid. Q: Electric substations have what devices, which use electromagnetic induction to increase or decrease the voltage of the current? Choices: - transistors - generators - tubes - transformers A:
transformers
(Question)
Answer the following question given this paragraph: Generators may be set up to produce either alternating or direct current. Generators in cars and most power plants produce alternating current. Q: What type of current do generators in cars use? Choices: - magnum current - direct current - polar current - alternating current A:
(Answer)
alternating current
Ques: Answer the following question given this paragraph: Ferns 11,000 They have large leaves in fronds. They have stiff stems, so they are tall growing; some are trees. They reproduce with spores. They need a moist habitat. Q: What type of habitat do ferns need to grow? Choices: - cold - elevated - dry - moist A:
Ans: moist
(Q).
Answer the following question given this paragraph: In beta decay, an electron and a proton form from a neutron (another unusual particle, called an antineutrino, is also produced). Only the electron is emitted from the nucleus. How does this change the atomic number and atomic mass of the atom?. Q: What particles are formed from a neutron in beta decay? Choices: - rust and proton - mucus and a proton - atom and proton - electron and a proton A:
(A).
electron and a proton
Ques:Answer the following question given this paragraph: The magnetic field produced by a current in a wire moves around the wire in concentric circles. More current creates a stronger magnetic field, and the direction of the current determines the direction of the magnetic field. Q: How does the magnetic field produced by a current in a wire move? Choices: - intermittently - slowly - counterclockwise - in concentric circles A:

Ans:in concentric circles
Answer the following question given this paragraph: Cells in blood include red blood cells, white blood cells, and platelets. Q: Cells in blood include red blood cells, white blood cells, and what? Choices: - protons - droplets - plasmids - platelets A:
platelets