P4

Question 1

What direction do Longitudinal waves cause there particles to vibrate in ?

Answer 1

They cause the particles to vibrate parallel to the direction of the wave travel

Question 2

What direction do Transverse waves cause there particles to vibrate in ?

Answer 2

They cause particles to vibrate perpendicular to the direction of the wave

Question 3

what type of wave is a P-wave and what can it travel through?

Answer 3

P-waves are longitudinal waves and can travel through solids and liquids . They are faster than S-waves

Question 4

What types of waves are S-waves and what can it travel through?

Answer 4

S-waves are transverse and can only travel through a solid . They are slower than P-waves

Question 5

Explain why it is hard to tell when an earthquake will happen ?

Answer 5

Because it is hard to measure when the tectonic plates will collide . We cannot see deep inside the earth .

Question 6

Describe uses for infrasound

Answer 6

monitoring earthquakes and volcanoes

used by animals to communicate

Question 7

Describe uses for ultrasound

Answer 7

Foetal scanning

sonar

Question 8

Compare using ultrasound and x rays for medical imaging ?

Answer 8

Ultrasound does not cause damage to healthy cells
Ultrasound is a non ionizing radiation
Ultrasound safer for consultant
3D imaging with ultrasound

X-rays produce higher resolution images
X-rays more suitable for bony structures