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Fourth Grade (Grade 4) Respiration, Digestion, and Excretion Questions

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Grade 4 Respiration, Digestion, and Excretion
Food gives us                 .
  1. energy
  2. sunlight
  3. oxygen
  4. all of the above
Grade 4 Respiration, Digestion, and Excretion
What does your body need that it gets from air?
  1. carbon dioxide
  2. oxygen
  3. nitrogen
Grade 4 Respiration, Digestion, and Excretion
Organs that allow you to breathe
  1. heart
  2. legs
  3. lungs
  4. eyes
Grade 4 Respiration, Digestion, and Excretion
Grade 4 Respiration, Digestion, and Excretion
When the stomach has digested the food, where does it send it?
  1. small intestine
  2. large intestine
  3. bladder
  4. kidneys
Grade 4 Respiration, Digestion, and Excretion
Where does the last step of digestion occur?
  1. mouth
  2. stomach
  3. small intestine
  4. large intestine
Grade 4 Respiration, Digestion, and Excretion
What do the respiratory and the circulatory systems work together to do?
  1. deliver calcium to the bones
  2. deliver blood to your lungs
  3. deliver oxygen and nutrients to cells throughout the body
Grade 4 Respiration, Digestion, and Excretion
Grade 4 Respiration, Digestion, and Excretion
What does saliva do?
  1. causes mechanical digestion
  2. causes chemical digesion to occur and create a new substance
  3. makes food soft and easier to swallow
Grade 4 Respiration, Digestion, and Excretion
Grade 4 Respiration, Digestion, and Excretion
Grade 4 Respiration, Digestion, and Excretion
Food the body can't use is stored in the                .
  1. stomach
  2. large intestine
  3. mouth
  4. small intestine
Grade 4 Respiration, Digestion, and Excretion
Where does digestion start?
  1. In you mouth
  2. In your small intestine
  3. In your large intestine
  4. In your stomach
Grade 4 Respiration, Digestion, and Excretion
Grade 4 Respiration, Digestion, and Excretion
Grade 4 Respiration, Digestion, and Excretion
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