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Senses at work - lesson 4
Senses at work - lesson 4
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1
Reaction time can be estimated from the time between..........
sending two messages to the brain by the sensory receptors.
sending message to the brain by the sensory receptors, and suitable response.
suitable response, and sending message to the brain by the sensory receptors.
suitable response, and suitable next response.
2
The shorter the reaction time, the............
faster the predator can catch the prey.
less chance the prey survives.
longer the time taken by the prey to detect the presence of a predator.
faster the prey can run away from the predator.
3
The reaction time is always........
about four minutes.
about two minutes.
about three minutes.
less than one second.
4
Sensory receptors, brain and nerves,.........
they work separately from each other.
only the brain works individually.
they work together with each other.
only sensory receptors work individually.
5
Reaction time has an important effect in all of the following situations except..........
feeling the hotness of a solid object and moving hands away from it.
planting some types of plants in a garden.
hearing fire alarm, and people running away from this place.
seeing red traffic light and applying the brakes to stop the car.
6
When you see a car coming towards you,.......... to get away from it.
sensory receptors in the eyes send a signal to the brain first
sensory receptors in the ears send a signal to sensory receptors in the eyes
sensory receptors in the eyes send a signal to sensory receptors in the ears
sensory receptors in the ears send a signal to the brain first
7
The brain can explain what you see faster than what you hear, this is because..........
visual response is faster than auditory response.
auditory response is faster than visual response.
visual reaction time is less than auditory reaction time.
visual reaction time is the same as auditory reaction time.
8
When you hear a fire alarm and smell a smoke odour, all of the following play a role such that a person can survive and run away from this place except..........
nerves, spinal cord and brain.
sensory receptors in the nose and eyes.
digestive system.
different body muscles.
9
When you hear the fire sirens, your......... send a signal to the brain.
ears
mouth
nose
Eyes
10
In response to a danger,.......... play a critical role in transmitting nerve signals to and from the brain.
blood vessels
the brain
Nerves
sensory receptors.
11
The response to a danger begins with.......... and ends with the suitable response.
Nerves
sensory receptors.
the brain
blood vessels
12
The.......... the reaction time to a danger, the greater the chance of survival.
no correct answer
Longer
both shorter and Longer
shorter
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