Scientific Questions for 4th Grade.

What is the first stage of a plant's life cycle?

• Flowering stage

• Seed stage

• Germination stage

• Mature plant stage

Name one part of the human body that helps us breathe.

• Lungs

• Stomach

• Heart

• Kidneys

What are the three main layers of the Earth?

• Inner Shell, Outer Shell, Surface

• Lithosphere, Atmosphere, Hydrosphere

• Rock, Water, Air

• Crust, Mantle, Core

How do plants make their own food?

• Plants make their own food through photosynthesis.

• Plants absorb nutrients from the soil.

• Plants rely on animals for food.

• Plants use sunlight to grow but not for food.

What system in the human body is responsible for movement?

• Digestive system

• Muscular system

• Nervous system

• Skeletal system

What layer of the Earth is made up of solid rock?

• Outer core

• Crust

• Mantle

• Inner core

What do we call the process of a seed growing into a plant?

• Pollination

• Germination

• Fertilization

• Photosynthesis

Which organ in the human body pumps blood?

• liver

• kidneys

• lungs

• heart

What is the outermost layer of the Earth called?

• crust

• atmosphere

• mantle

• core

How do roots help a plant survive?

• Roots only serve as a decorative part of the plant.

• Roots are responsible for flower production.

• Roots primarily help in photosynthesis.

• Roots help a plant survive by anchoring it, absorbing water and nutrients, and storing energy.