Light and Color Concepts

Jojo's Science Show presents 10 light experiments, emphasizing safety and scientific principles. The video covers light speed, visualization with lasers, total internal reflection, and refraction. Experiments include popping balloons with focused light, creating rainbows with prisms, and using photoresistors to conduct electricity. The show concludes with a demonstration of color temperature differences and encourages viewers to explore science.

What is the speed of light in miles per second?

• 300,000 kilometers per second

• 150,000 miles per second

• 671 million miles per hour

• 186,000 miles per second

What is the phenomenon called when light reflects within a glass rod and exits the other side?

• Refraction

• Dispersion

• Diffraction

• Total internal reflection

How can you make light travel around corners using a bent acrylic rod?

• By using a prism

• By using a concave mirror

• By using total internal reflection

• By using a convex lens

What happens when you focus light rays on a single point using a lens?

• The light changes color

• The light energy turns to heat

• The light disperses

• The light creates a shadow

Why does a coin appear when water is poured into a bowl?

• The water bends the light

• The water reflects the coin

• The water magnifies the coin

• The water absorbs the light

What is the role of a prism in creating a rainbow?

• It absorbs light

• It reflects light

• It splits white light into colors

• It magnifies light

How does a photoresistor work when exposed to light?

• It emits light

• It stores electricity

• It conducts electricity

• It blocks electricity

Which color of clothing should you wear in summer to stay cooler?

• Blue

• White

• Red

• Black

Why is blue light cooler than red light?

• Blue light has less energy

• Blue light is absorbed more

• Blue light reflects more energetic light

• Blue light is slower

What is the main reason objects have color?

• They emit light of that color

• They reflect light of that color

• They absorb light of that color

• They change the light's wavelength