6th Grade Science Test Prep: Body Systems and Ecosystems

This video is a sixth-grade science test prep session covering various topics. It includes questions on the digestive and circulatory systems, the role of the esophagus, photosynthesis, the rock cycle, omnivores, and decomposers. Each question is followed by an explanation of the correct answer and the reasoning behind it.

What is the primary function of the digestive system?

• Circulating blood

• Breaking down food

• Breathing

• Reproducing

Where does the oxygen-rich blood travel first after leaving the lungs?

• Kidneys

• Heart

• Stomach

• Brain

What is the main function of the circulatory system?

• Producing hormones

• Transporting oxygen

• Absorbing sunlight

• Digesting food

What is the correct sequence of food passage in the digestive system?

• Esophagus, Stomach, Small Intestine, Large Intestine

• Mouth, Esophagus, Stomach, Large Intestine

• Esophagus, Large Intestine, Small Intestine, Stomach

• Stomach, Esophagus, Small Intestine, Large Intestine

What role does the esophagus play in digestion?

• Releases digestive enzymes

• Absorbs nutrients

• Filters harmful substances

• Transports food to the stomach

What gas is produced during photosynthesis?

• Carbon dioxide

• Oxygen

• Nitrogen

• Hydrogen

Where does erosion primarily occur in the rock cycle?

• Before metamorphism

• During weathering

• After sedimentation

• At the beginning

Which animal is considered an omnivore?

• Owl

• Deer

• Rabbit

• Black Bear

Which organism acts as a decomposer in an ecosystem?

• Mushroom

• Tortoise

• Spider

• Flower

What process breaks down rocks over time?

• Condensation

• Photosynthesis

• Respiration

• Erosion