Question

Imagine that you're doing an experiment that requires you to smell the odor of a chemical solution in a beaker. Which procedure should always be followed?
A. Wave the fumes toward your nose with your hand.
B. Pour some of the solution on a paper towel and then sniff the towel.
C. Hold the beaker directly beneath your nose.
D. Remove your safety goggles before smelling the chemicals.
@brittanydosey

Answer 1

A

Answer 2

thx

Answer 3

now this one is big

Answer 4

When observing the stars in the night sky, you will notice that all of the stars appear to move around the sky during the night except for one, the North Star. Why does the North Star always appear in the same position while the other stars appear to move around it?
A. The North Star is found at the center of the galaxy and therefore does not move in the night sky. All the other stars are found throughout the galaxy and therefore appear to move in the night sky.

B. The Earth's axis is pointed directly at the North Star, so the star always appears in the same part of the northern sky. The other stars appear to move in the night sky because the Earth is rotating.

C. The North Star is much farther away from the Earth than the other stars and therefore appears to stay still. The other stars are much closer and therefore appear to move in the night sky.

D. The North Star is much closer to the Earth than the other stars and therefore appears to stay still. The other stars are much farther away and therefore appear to move in the night sky.

Answer 5

ok.

Answer 6

D

Answer 7

thx