Physics 8th review for Extra

Which of Newton's laws of motion is also called the law of Inertia?

• 1st Newton Law of motion

• 2nd Newton Law of motion

• 3rd Newton Law of motion

• 0 Newton Law of motion

The acceleration due to gravity near the surface of Earth is equal to:

• 9.8 m/s

• 9.8 kgm/s

• 9.8 N

• 9.8 m/s²

If you pull a rope with a force of 100N to the right and your friend pulls the rope with a force of 100N to the left, what is the net force on the rope?

• 200N to the right

• 200N to the left

• 0 N

• 100 N to the right

The push or pull that occurs when a magnet interacts with another object is:

• Magnet

• Magnetic field

• Magnetic force

• Magnetism

It is a substance that contains a magnetic field and attracts iron.

• Metals

• Electricity

• Solenoid

• Magnet

Materials that are considered the best conductors of electricity:

• Gold and copper

• Paper and polymer

• Glass and plastic

• Rubber and wood

The complete range of electromagnetic waves placed in order of increasing frequency:

• Electromagnetic spectrum

• Visible light

• X-rays

• Gamma rays

Electromagnetic radiation that can be seen by human eyes:

• Electromagnetic spectrum

• Visible light

• X-rays

• Gamma rays

The type of electromagnetic radiation used to see a broken bone and in airport security screeners:

• Electromagnetic spectrum

• Visible light

• X-rays

• Gamma rays

What is the official SI unit for loudness?

• Joules

• Decibels

• Hertz

• Degrees