What are the three states of matter?
Solid, Liquid, Gas
What happens to light when it hits a smooth, shiny surface like a mirror?
It reflects—it bounces off the surface.
What causes day and night?
Earth's rotation on its axis.
What do we call all the nonliving and living parts of an ecosystem?
Abiotic and Biotic factors
What structure helps birds fly?
Its wings.
What is a mixture?
Two or more substances combined, that can be separated.
A hair dryer produces what type of energy?
Thermal
What is the water cycle process where water vapor cools and forms clouds?
Condensation
What role do producers play in a food chain?
They make their own food using sunlight (like plants).
What is the function of an owl’s large eyes?
So they can hunt at night.
What physical property can you use to tell if something will sink or float?
Density
What part of a circuit must be closed to allow electricity to flow?
The switch.
What processes form sedimentary rocks?
Weathering, erosion, deposition, compaction, cementation
What is an invasive species?
An invasive species is a plant or animal that doesn’t belong in an area.
What is camouflage, and how does it help animals?
Camouflage helps animals blend in with their surroundings to hide from predators or sneak up on prey.
What is solubility?
The ability of a substance to dissolve in a liquid.
What happens to light when it passes through water?
It bends - refraction
How are fossil fuels formed?
From dead plants and animals over millions of years under heat and pressure
How can pollution in a river affect animals in a forest nearby?
It can poison animals that drink the water or eat plants growing near the river.
What behavior helps baby sea turtles survive right after hatching?
They instinctively crawl toward the ocean.
How can you separate a mixture of sand and iron filings?
Use a magnet to attract the iron.
What energy transformation occurs when using a toaster?
Electrical Energy to Thermal Energy
What landform is created by flowing water over time?
A canyon
What is one way people can help protect ecosystems?
By conserving water, recycle, plant native trees or flowers, not cutting down trees.
What’s the difference between an instinct and a learned behavior?
Instincts are actions animals are born knowing how to do; learned behaviors are things they learn from others.