Biology
What do plants need to make food?
Sunlight, water, carbon dioxide, and nutrients from soil
What takes up 70% of the Earth?
Water
What state of matter is water when it’s frozen?
solid
What tool would you use to look at tiny things, like cells?
Microscope
What do you call all the living and nonliving things in an area?
Ecosystem
What three things are needed to start and keep a fire burning?
Heat, fuel, and oxygen (Fire Triangle)
What is the basic unit of life?
cell
What causes day and night on Earth?
Earth's rotation on its axis
What do we call something that takes up space and has mass?
matter
What do you call a prediction you make before doing an experiment?
hypothesis
What do animals usually eat to get energy?
Plants or other animals
What part of a candle flame is usually the hottest?
The blue part at the base of the flame
Which organ helps pump blood throughout your body?
heart
Name all gas planets in the Solar System
Jupiter, Saturn, Uranus, Neptune
What is the force that pulls objects toward Earth?
gravity
Why do scientists repeat their experiments?
To make sure the results are accurate and reliable
What do we call a group of the same species living in the same place?
Population
What is the mascot of the Total Fire Suppression policy, and what is its name?
Smokey the bear
What gas do humans breathe in to survive?
Oxygen
What is the natural satellite that orbits Earth?
The moon
What tool is used to measure pressure?
Barometer
What is the term for a carefully designed test used to support or disprove a hypothesis?
Experiment
What is one way humans can help reduce pollution?
Recycle, reduce waste, plant trees, or use less plastic
Why is it dangerous to throw water on a grease fire?
Water can cause the grease to splash and spread the fire
What is the name of the process by which plants make their food using sunlight?
photosynthesis
What is the difference between a meteor and a meteorite?
Meteor: This is the streak of light we see in the sky when a space rock enters Earth’s atmosphere and burns up due to friction
Meteorite: If the space rock survives the trip through the atmosphere and lands on Earth's surface, it is then called a meteorite.
What is the difference between a physical change and a chemical change?
A physical change does not create a new substance (e.g., melting); a chemical change does (e.g., burning)
What is a "controlled group" in an experiment?
Nothing is done to this group
What is biodiversity, and why is it important in an ecosystem?
The variety of living organisms; it keeps ecosystems healthy and stable
How does a fire extinguisher stop a fire?
It removes one or more parts of the fire triangle—usually oxygen or heat
What part of the cell controls most of its activities and contains DNA?
nucleus
What are tectonic plates, and what natural event do they often cause when they move?
Pieces of Earth's crust that float on the mantle; they cause earthquakes when they move
What happens to molecules in a substance when it gets hotter?
They move faster and spread out
How do you identify the dependent and independent variables in an investigation?
Independent variable is what you change; dependent variable is what you measure
What happens to an ecosystem if one species goes extinct?
It can disrupt the food chain and cause other species to struggle or disappear
What is a controlled burn, and why do people sometimes do it on purpose?
A fire set on purpose to clear dead plants or prevent larger wildfires