STEM Exploration

What is the function of a lever in a simple machine?

• Amplify force or change the direction of the force applied

• Generate heat

• Create electricity

• Produce light

What are the three main parts of a plant involved in photosynthesis?

• Leaves, chloroplasts, and stomata

• Roots, flowers, and stems

• Fruits, thorns, and vines

• Seeds, petals, and branches

What is the unit of measurement for electric current?

• B

• D

• A

• C

What is the role of decomposers in an ecosystem?

• They provide energy to the organisms in the ecosystem

• They break down dead organisms and organic matter, releasing nutrients back into the ecosystem.

• They absorb excess nutrients from the ecosystem

• They create new organisms in the ecosystem

What is the purpose of a beam in a structure?

• To create a pathway for airflow within the structure

• To support the load and distribute it to the columns or walls

• To provide lighting for the structure

• To add decorative elements to the structure

Name one example of a simple machine used in everyday life.

• Screwdriver

• Television

• Toaster

• Wheel and axle

What gas is used by plants during photosynthesis?

• Oxygen (O2)

• Nitrogen (N2)

• Hydrogen (H2)

• Carbon dioxide (CO2)

What is the flow of electric charge called?

• voltage flow

• charge movement

• electricity flow

• electric current

How do producers contribute to an ecosystem?

• By converting sunlight into energy through photosynthesis

• By creating a balance in the ecosystem

• By controlling the weather patterns

• By hunting and consuming other organisms

What is the difference between a frame structure and a shell structure?

• Frame structures are always larger than shell structures, while shell structures are always smaller and more compact.

• Frame structures are made of interconnected beams and columns, while shell structures are made of curved, thin surfaces.

• Frame structures are only used in architecture, while shell structures are only used in engineering.

• Frame structures are made of solid walls, while shell structures are made of interconnected beams and columns.