Hear No Evil See No Evil Pre Test

Heat energy is always moving. Where will heat energy move fastest by conduction in a solid?

• From hot to cot

• From cooler to warmer

• From cold to hot

• From warmer to cooler

Sound waves cannot travel in space because:

• Sound waves are mechanical waves and need a material to vibrate through

• It is too hot

• It is too cold

• Space is too big and the energy is lost

The pulse of an air cannon does not travel very far. Why is this?

• The pulse meets resistance or friction from the other air particles in front of it

• The elastic band is not strong enough

• Warm air slows the pulse from travelling very far

• The container is not big enough

Which of the following is not a form of radiation?

• Radio waves

• Sound waves

• X rays

• Microwaves

Electrical circuit elements convert one form of energy to another. The efficiency is calculated by comparing output to input. What is the light efficiency of an incandescent light globe

• 80%

• 100%

• 2%

• 40%

The amplitude of a wave is the:

• Time it takes for one complete wave to pass a fixed point

• Length from the crest of one wave to the trough of the next wave

• Length from the crest of one wave to the crest of the next wave

• Length from the crest on one wave to the normal (middle) position

When a slinky is stretched:

• A pulse travels faster

• The wavelength gets shorter

• A pulse travels slower

• The speed of the pulse is unaffected

The human eye transforms light energy to electrical energy at the:

• Lens

• Vitreous Humour

• Light receptor cells

• Occipital Lobe

The law of conservation of energy means that

• The energy in the universe is constant

• The energy transfers within a local system are constant

• The energy transformations within a local system are constant

• The energy transfers and transformations within a local system are constant

Light passes through the following structures in which order?

• Cornea, aqueous humour, lens, vitreous humour

• Vitreous humour, lens, aqueous humour, cornea

• Cornea, vitreous humour, lens, aqueous humour

• Aqueous humour, corner, lens, vitreous humour