OSHA
Science of Lasers
Cutting
Materials
The Medicine Bag
100

What is OSHA's full name?

Occupational Safety & Health Administration

100

What is a Laser?

A concentrated beam of light.

100

What kind glue is used to hold together wood pieces?

Wood Glue

100

Why should you never cut food and non-food on the same machine?

You might get non-food particles in the food.

100

Why does Grandfather visit the family?

He is dying.

200

Which US President signed OSHA into law?

Richard Nixon

200

Why can't you see a laser normally?

You can only see light when it hits your eyes.

200

What happens to the smoke during laser cutting, and why?

It is sucked out the machine through a vent to prevent fires.

200

Only organic materials can be cut.

Give 3 examples of organic (made from living or once-living things) materials.

Any 3 of:

Food, Leather, Bone, Skin, Scales, Plastic, Vynil, Rubber

200

Why doesn't Grandson want his friends to meet Grandfather?

He is afraid that they will make fun of him.

300

What is the purpose of OSHA?

To keep people safe at work and home.

300

What kind of energy makes up a laser?

Light

300

How many colors can a laser cutter print at once, and why?

None. Laser cutters cannot print colors.

300

Inorganic (not made from living things) materials can only be etched.

Give 3 examples of inorganic materials.

Any 3 of:

Metals, Stones, Glass, Crystal, Cement

300

What does Grandson find in Grandfather's boots?

Money

400

Andrew is a janitor at a hospital. He has to clean up bodily fluids (like blood and urine) regularly. He puts on gloves and a mask first. Then he pours cleaner on the mess. Then mops and dries it.

Which part of this story is related to OSHA?

He puts on gloves and a mask first.

(The right to safety equipment.)

400

How does a laser move around corners?

By bouncing off of mirrors or reflective surfaces.

400

What happens to the edges of leather when you cut it?

It gets crispy, crusty, and burned.

400

What happens when you try to lase copper?

The laser bounces back into the machine and could damage or set it on fire.

400

Why is the Medicine Bag important?

It is a family heirloom passed from oldest to youngest.

500

Marissa works at a clothing store in the mall. She gets to work early and opens it up. She sells clothes to the customers. Goes to lunch. Starts cleaning up the store. The closes the store for the night.

Which part of this story is protected by OSHA?

Goes to lunch.

(Right to take breaks.)

500

Describe the difference between Etching and Cutting with a laser.

Etching only burns part of the way through.

Cutting burns all the way through.

500

Why kind of shapes can a laser cutter cut out?

Anything with a closed outline.

500

What would happen if you were to put your hand in the path of the laser?

It would burn, cut, or etch through you.

500

What happens at the end of The Medicine Bag.

Grandfather dies, and Grandson takes the Medicine Bag to the reservation.