Science Challenge

What is a chemical reaction?

• A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

• A chemical reaction is a physical change in matter.

• A chemical reaction is a mathematical equation.

• A chemical reaction is a biological process.

Name the process by which plants make their food.

• Respiration

• Fermentation

• Transpiration

• Photosynthesis

What is the unit of electric current?

• Ampere (A)

• Volt

• Joule

• Ohm

Which organ is responsible for pumping blood throughout the body?

• brain

• stomach

• heart

• liver

What happens when you mix baking soda and vinegar?

• Carbon dioxide gas is released.

• The mixture becomes highly flammable

• The mixture produces a foul odor

• The mixture turns into a solid

What is the role of producers in an ecosystem?

• Producers consume food from other organisms.

• Producers are responsible for decomposing organic matter.

• Producers are only found in aquatic ecosystems.

• Producers create food through photosynthesis or chemosynthesis.

What is the function of the nucleus in a cell?

• Energy production

• Control center and contains genetic material

• Waste elimination

• Cell wall formation

What is the main source of energy in most ecosystems?

• Sunlight

• Volcanic eruptions

• Moonlight

• Wind

What is the function of the nervous system?

• Produce hormones for growth.

• Transmit signals and coordinate bodily functions.

• Regulate body temperature.

• Digest food and absorb nutrients.

What is the formula for Ohm's Law?

• I = V + R

• I = R / V

• I = V / R

• I = V x R