Question text
14 When using a microscope to look at smoke particles in air, Brownian motion is observed. What causes the smoke particles to move at random? A Smoke particles are hit by air particles. B Smoke particles are moved by convection currents in the air. C Smoke particles have different weights and fall at different speeds. D Smoke particles hit the walls of the container.
14 When using a microscope to look at smoke particles in air, Brownian motion is observed.
What causes the smoke particles to move at random?
A Smoke particles are hit by air particles.
B Smoke particles are moved by convection currents in the air.
C Smoke particles have different weights and fall at different speeds.
D Smoke particles hit the walls of the container.
Select your answer: