Want to see correct answers?
Login or join for free!
  Physics Worksheets
Looking for Physics worksheets?
Check out our pre-made Physics worksheets!
Share/Like This Page
Filter By Grade

You are browsing Grade 8 questions. View questions in All Grades.

Kindergarten Grade 1 Grade 2 Grade 3 Grade 4 Grade 5 Grade 6 Grade 7 Grade 8 Grade 9 Grade 10 Grade 11 Grade 12 College Graduate Continuing Education

Browse Questions

Eighth Grade (Grade 8) Physics Questions

You can create printable tests and worksheets from these Grade 8 Physics questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

Previous Page 89 of 107 Next
Grade 8 Heat Transfer
Sample 1 has 500 grams of sodium at a temperature of 25 degrees Celsius. Sample 2 has 100 grams of sodium at a temperature of 25 degrees Celsius. What is true about the thermal energy of the two samples?
  1. Sample 1 has more thermal energy.
  2. Sample 2 has more thermal energy.
  3. Samples 1 and 2 have equal amounts of thermal energy.
  4. None of the above.
Grade 8 Forces and Motion
A bicycle rider decreases his speed from 15 m/s to 5 m/s in 10 seconds. What is his rate of acceleration?
  1. 1 m/s
  2. 15ms2
  3. -5ms2
  4. -1ms2
Grade 8 Waves and Sound
What is highest point of a wave called?
  1. amplitude
  2. trough
  3. crest
  4. compression
Grade 8 Heat Transfer
Scientists use the                 scale to measure temperature.
  1. Fahrenheit
  2. Celsius
  3. Degree
  4. Pounds
Grade 8 Heat Transfer
What is conduction?
  1. Energy transfer by touch
  2. Energy transfer by electromagnetic wave
  3. Energy transfer by sound
  4. Energy transfer by liquid or gas
Grade 8 Magnetism and Electricity
Electric current passing through a wire produces                                 .
  1. a permanent magnet
  2. a magnetic field around the wire
  3. a compass
  4. geographic poles
Grade 8 Waves and Sound
Which of the following is true of visible light?
  1. Its waves are used for radio broadcasts.
  2. It is also called X-ray.
  3. It is the largest portion of the electromagnetic spectrum.
  4. Its waves hit an object and are either absorbed or reflected.
Grade 8 Waves and Sound
Which of the following types of EM waves carry the most energy?
  1. Microwaves
  2. Radio Waves
  3. Infrared Waves
  4. Ultraviolet Waves
Grade 8 Forces and Motion
A soccer ball sits still on the ground until someone applies a force by kicking it. This scenario is best described by which law of motion?
  1. Newton's First Law of Motion
  2. Newton's Second Law of Motion
  3. Newton's Third Law of Motion
  4. None of the above
Grade 8 Energy and Momentum
Zach applies a force of 300 N while moving a box 4 meters. How much work did he do?
  1. 0 joules
  2. 1,200 joules
  3. 1,200 newtons
  4. 75 joules
Grade 8 Magnetism and Electricity
Magnetic fields that surround all magnets exert                   .
  1. the magnetic force
  2. resistance
  3. air pressure
  4. electric current
Grade 8 Energy and Momentum
A generator converts mechanical energy to                 energy.
  1. heat
  2. electrical
  3. radiant
  4. chemical
Grade 8 Waves and Sound
Which part of the ear detects sound waves?
  1. auditory nerves
  2. ear drum
  3. ear canal
  4. outer ear
Grade 8 Waves and Sound
A        wave       is a disturbance that moves through matter and space and carries energy.

The             frequency            of a wave is the number of wavelengths that pass by a point each second.

The amount of energy that a wave carries past a certain area each second is the             intensity            of the sound.

Electromagnetic waves with wavelengths between about 400 billionths and 10 billionths of a meter are                     ultraviolet waves                    .

The                     law of reflection                    is the angle that the incoming wave makes with the normal equals the angle that the outgoing wave makes with the normal.

        pitch        is the human perception of the frequency of sound.

A                   transverse wave                  causes particles in matter to move back and forth at right angles to the direction in which the wave travels.

The distance between one point on a wave and the nearest point moving with the same speed and direction is the              wavelength             .

A                       compressional wave                       causes particles in matter to move back and forth along the same direction in which the wave travels.

Repeated echoes are called                 reverberation                .

                        electromagnetic waves                        are waves that can travel through matter or through empty space.

             refraction             is the change in direction of a wave when it changes speed as it travels from one material to another.

                 infrared waves                 have wavelengths between 0.001 meters and 700 billionths of a meter.

The                            electromagnetic spectrum                           is the complete range of electromagnetic wave frequencies and wavelengths.

Waves can change direction by               diffraction              which is bending of waves around an object.
Previous Page 89 of 107 Next