Matter
Going from a solid to a liquid is?
Melting
Which system includes all living things on Earth?
Biosphere
Because Earth is rotating on its axis
Which organ receives signals from the brain to either contract or relax?
Muscles
What is a producer?
A plant that can make its own food.
Going from a gas to a liquid is?
Condensation
Which system includes all of Earth's rocks and minerals?
Geosphere
Outdoor shadows are longest at what time of day?
Sunrise and sunset
Which organ produces all the blood for the body?
Skeleton
Where do we get all our energy from?
The sun
A student was given a mixture of iron filings and sand. How would you separate each item from each other?
Stir the mixture with a bar magnet.
Which spheres are interacting with each other?
Water availability impacts plant growth and animals who depend on plants for food.
Biosphere & Hydrosphere
During winter, the sun is _______ in the sky.
Lower
Which organ breaks down toxins in the blood?
Liver
Decomposers. They're important because they provide/produce fertilized soil for our plants.
Is this a chemical or physical change?
Cracks forming in concrete due to change in temperature is a?
Physical Change
Which spheres are interacting with each other?
Water erodes the land brining nutrients to lakes.
Geosphere & Hydrosphere
Why do we have longer daylight hours in the summer time and not in the winter time?
Since the sun is higher in the sky, we receive more daylight hours, but we receive less daylight hours in the winter because the sun is lower in the sky.
Which organ is a tube that allows air to pass into and then out of the body?
Trachea
What does the arrows represent in a food chain or food web?
They show the flow of energy going from one living thing to the next.
Is this a chemical or physical change?
Rust forming on a metal gate.
Which spheres are interacting with each other?
A volcano erupts adding carbon dioxide to the air.
Atmosphere & Geosphere
What are the reasons for the seasons?
Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays (due to our revolution around the sun). So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.
Which organ produces insulin, a hormone that helps regulate the body's glucose level?
Pancreas
Why did the dinosaurs go extinct?
The asteroid impact was the main culprit but volcanic eruptions caused the sun to disappear within the ash causing most living things to die within the food web.