Quarter 2 - Science

Which pair of EM Waves is commonly used for communication?

• x-ray and infrared

• radio waves and gamma ray

• infrared and microwave

• radio wave and microwave

Tags

NGSS.MS-PS4-3

Which of the following is correctly arranged from longest to shortest wavelength?

• gamma ray, x-ray, radio wave

• microwave, radio wave, x-ray

• visible light, ultraviolet ray, x-ray

• x-ray, gamma ray, ultraviolet ray

Tags

NGSS.HS-PS4-1

How will you describe the magnetic field around a current-carrying coil? The magnetic field _____.

• is strongest inside the current-carrying coil.

• is weakest near and around the coil.

• lines are closed loops along the loops in the coil.

• vary directly with distance from the coil.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Where do magnetic poles of a common bar magnet be located? At ________.

•   both ends

• both sides

• the edges

• the middle

An electromagnet is made by placing many turns of wire around a core of ______.

•  iron

• nickel

• rubber

• gold

If you wish to increase the amount of the induced current, which of these are you going to do?

•      increase the velocity of rotation

• reduce the number of loops

• use the shortest wire        

• use a weaker wire

Tags

NGSS.HS-PS2-5

In a drawing of magnetic field lines, the stronger the field is, _____.

• the more divergent the field lines are

• the farther apart the field lines are

• the closer together the field lines are

• the more nearly parallel the field lines are

Tags

NGSS.MS-PS2-3

What can you make visible by sprinkling iron filings around a magnet?

• north and south poles

• magnetic field lines

• magnetic domains

• electricity

Electromagnetic induction is a process in which electric current is generated in a conductor by  ___.

• a changing emf    

• a changing magnetic field

•   a changing magnetic force

• a changing kinetic energy

Tags

NGSS.HS-PS2-5

A force of attraction can be happened between a permanent magnet and an object, only if the object is _____.

• a conductor           

• a ferromagnetic

• an insulator

• another magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5