Question

question 1
select all that are correct.
particles move...
□ at various random speeds
□ in straight-line paths
□ so that all particles have the same velocity.
□ in random directions
□ curved path if they spin

Explanation:

To solve this, we recall the kinetic theory of particles (relevant to Physics, a subfield of Natural Science).

• Particles in a gas (for example) move at various random speeds (due to different kinetic energies), so "at various random speeds" is correct.
• They move in straight - line paths until they collide with other particles or the container walls, so "in straight - line paths" is correct.
• Particles have different velocities (speed and direction), so "so that all particles have the same velocity" is incorrect.
• Their directions of motion are random, so "in random directions" is correct.
• If particles spin, their paths can be curved (due to factors like angular momentum affecting their trajectory), so "curved path if they spin" is correct.

Answer:

A. at various random speeds, B. in straight - line paths, D. in random directions, E. curved path if they spin