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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..........
suitable response, and suitable next response.
sending message to the brain by the sensory receptors, and suitable response.
suitable response, and sending message to the brain by the sensory receptors.
sending two messages to the brain by the sensory receptors.
2
The shorter the reaction time, the............
faster the predator can catch the prey.
longer the time taken by the prey to detect the presence of a predator.
less chance the prey survives.
faster the prey can run away from the predator.
3
The reaction time is always........
about four minutes.
about three minutes.
less than one second.
about two minutes.
4
Sensory receptors, brain and nerves,.........
only sensory receptors work individually.
they work separately from each other.
they work together with each other.
only the brain works individually.
5
Reaction time has an important effect in all of the following situations except..........
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.
feeling the hotness of a solid object and moving hands away from it.
6
When you see a car coming towards you,.......... to get away from it.
sensory receptors in the ears send a signal to the brain first
sensory receptors in the eyes send a signal to the brain first
sensory receptors in the eyes send a signal to sensory receptors in the ears
sensory receptors in the ears send a signal to sensory receptors in the eyes
7
The brain can explain what you see faster than what you hear, this is because..........
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.
visual response is faster than auditory response.
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
nose
mouth
Eyes
10
In response to a danger,.......... play a critical role in transmitting nerve signals to and from the brain.
blood vessels
sensory receptors.
the brain
Nerves
11
The response to a danger begins with.......... and ends with the suitable response.
Nerves
the brain
blood vessels
sensory receptors.
12
The.......... the reaction time to a danger, the greater the chance of survival.
no correct answer
shorter
Longer
both shorter and Longer
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