Air pressure that directly contacts the skin cannot exceed _____________psi

• 25

• 30

• 40

• 50

Direct contact with compressed air can cause serious medical conditions and even death.

• True

• False

As little as 12 pounds of compressed air pressure can blow an eye out of its socket.

• True

• False

Never use _____________ to bleed air pressure.

a wrench

• a wrench

• your finger

• a screwdriver

• pliers

Compressed air accidentally blown into the mouth can rupture the lungs, stomach or intestines.

• True

• False

Compressed air can enter the navel, even through a layer of clothing, and inflate and rupture the intestines.

• True

• False

Which clothing items should not be worn while in the lab? (select all that apply)

• Safety goggles

• Open-toed shoes

• Long necklaces

• Earphones

• Protective gloves

Which clothing items should be worn while in the lab? (Select all that apply)

• Loose clothing

• Hair ties

• Long, dangling scarves

• Close-toed shoes

• Safety goggles

What should you do if you are not sure how to operate a machine?

• Ask a friend

• Make the best guess

• Ask the teacher

• Go online to find instructions about how to operate the machine

What should you do with your backpack while you are in the lab?

• Put it beside the machine you are operating so that you have easy access to it.

• Keep it out of the lab and out of walkways so that other people do not trip over it.

• Put it in the doorway so that you can pick it up on your way out of the lab.

• Put it beside the machine that you plan to use most while you are in the lab