How Animals Sense the World

Grade 4 Science Worksheet - Challenge Me

Circle the answer.

1. 1.

   A student touches ice and quickly says "cold!" Put the steps in order.

   • skin senses cold → nerves carry message → brain names it → she speaks
   • she speaks → skin senses cold → nerves carry message → brain names it
   • brain names it → skin senses cold → nerves carry message → she speaks
   • skin senses cold → she speaks → nerves carry message → brain names it
2. 2.

   A horse was stung by a bee near a fence. Now it stays away from that fence. What explains this?

   • the horse's brain stored a memory of the sting
   • the horse grew new ears after the sting
   • the fence moves away from the horse
   • the horse can smell bees from miles away
3. 3.

   A rattlesnake can find a warm animal in the dark using sensors near its eyes. What information do the sensors collect?

   • the animal's smell on the wind
   • heat given off by the animal
   • sounds made by the animal
   • light shining from the animal
4. 4.

   A puppy chewed a bitter plant once and spat it out. It never chews that plant again. What guided its response?

   • a new sense of smell it grew
   • the plant moving out of reach
   • a memory of the bitter taste
   • its fur telling it to stop
5. 5.

   A student's eyes see a ball flying at her. She catches it. Which part of her body processed the information?

   • her eyes
   • her stomach
   • her hands
   • her brain