Science Competition

I am a tiny organism that can be found in water and air. I am responsible for making bread rise and causing infections in humans. What am I?

• Virus

• Nitrogen

• yeast

I am a type of energy that travels in waves and can be seen by the human eye. Without me, we wouldn't be able to see anything around us. What am I?

• Water

• Wind

• Light

• Fire

I am a type of animal that has a backbone and can breathe air. I am known for my warm blood and my ability to give birth to live young. What am I?

• Birds

• Mammals

• Spiders

• Reptiles

I am a type of force that pulls objects toward each other. I am responsible for keeping planets in orbit around the sun and for making objects fall to the ground. What am I?

• Axis

• Solar eclipse

• Rings

• Gravity

I am a type of gas that makes up about 78% of the Earth's atmosphere. I am essential for life, as all living things need me What am I?

• Oxygen

• Nitrogen

• Methane

• Water vapor

I'm the process by which plants make their own food. What am I?

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I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

• Soil

• Spores

• Fire

• Ash

I am the fifth planet from the Sun. What am I?

• Uranus

• Neptune

• Jupiter

• Saturn

I am a matter that has mass and takes up space. What am I?

• Dream

• Shadow

• Light

• Salt

I'm the softest mineral in the Mohs hardness scale . What am I?

• Fluorite

• Talc

• Quartz

• Topaz