Back to the Future II: Light

Waves involve movement that is repeated at regular intervals.

This is called:

• Periodic Motion

• Irregular Motion

• Frequent Motion

• Random Motion

The time between adjacent wave peaks passing a point is called the wave's:

• frequency

• colour

• period

• wavelength

The distance between adjacent wave peaks is called the wave's:

• frequency

• colour

• period

• wavelength

Ultraviolet light has more energy than Visible Violet Light because UV has:

• a shorter wavelength

  and hence

  a greater frequency

• a shorter wavelength

  and hence

  a lesser frequency

• a longer wavelength

  and hence

  a greater frequency

• a longer wavelength

  and hence

  a lesser frequency

Infrared Light has a longer wavelength than Visible Red Light and therefore has:

• a greater frequency

  and hence

  less energy

• a greater frequency

  and hence

  greater energy

• a lesser frequency

  and hence

  less energy

• a lesser frequency

  and hence

  greater energy

The colors of the visible light spectrum in order

from higher energy to lower energy is:

• violet

  blue

  cyan

  green

  yellow

  orange

  red

• violet

  blue

  cyan

  orange

  yellow

  green

  red

• red

  orange

  yellow

  green

  cyan

  blue

  violet

• red

  green

  yellow

  orange

  cyan

  blue

  violet

At the end of the Bluey episode 'Rain'

what is wrong with the double rainbow?

• The order of colors in both rainbows should be inverted

• The order of colors of the inner rainbow should be inverted

• The order of colors of the outer rainbow should be inverted

• The ends of the two rainbows should be toouching

A yellow pencil appears yellow because when yellow light hits the pencil the pencil:

• absorbs the yellow light

• reflects the yellow light

• transmits the yellow light

• produces the yellow light

Plant leaves appear to be green because chlorophyll in the leaves

• absorbs blue light

  absorbs green light

  absorbs red light

• absorbs blue light

  absorbs green light

  reflects red light

• reflects blue light

  absorbs green light

  absorbs red light

• absorbs blue light

  reflects green light

  absorbs red light

In the Bluey episode 'Camping' the fabric that makes up the tent can be observed to be:

• obtuse

• opaque

• transparent

• translucent