Space
The Sun is considered a...
Star
This is all the living and nonliving things interacting in an area.
An ecosystem
This state of matter has a definite shape and a definite volume.
Solid
This force pulls objects toward Earth's surface.
Gravity
Earth's outermost solid layer is called this.
Earth's crust
How many days does it take the Earth to revolve around the Sun?
365 Earth Days
Grass, trees, and algae belong to this group because they make their own food using energy from the Sun.
Producers
In this state of matter, particles are close together but can move past one another, allowing the substance to take the shape of its container.
Liquid
When you turn on a flashlight, the battery provides this type of energy to power it.
Chemical Energy
The process by which wind, water, ice, or gravity moves sediment from one place to another.
Erosion
Why do we have seasons?
The tilt of the earth's axis as it revolves around the sun
In this food chain, grass → rabbit → fox, what would most likely happen to the fox population if the rabbit population suddenly decreased?
The fox population would decrease due to lack of food.
When water is heated and changes from a liquid into a gas, this process is called what?
Evaporation
A student pushes a box across the floor. The force that opposes the box's motion is called this.
Friction.
Water freezes inside a crack in a rock. The ice expands and causes the rock to break apart. What process is happening?
Weathering
You observe the same constellation in the sky each night. It appears to shift across the night sky after about a week. Why?
Because of the Earth's revolution around the Sun.
A wildfire removes most of the plants from an ecosystem. Explain why this could eventually affect animals that don't eat plants.
Because fewer plants means less food and energy available to herbivores, which means less food for the animals that eat those herbivores.
You take a cold glass of water outside on a hot day. After a while, water droplets form on the outside of the glass. What is this process called?
Condensation.
You kick a soccer ball and it starts moving. What type of energy does the moving ball have?
Kinetic energy
A river carries sediment downstream and deposits it when the water slows down. What process is occurring?
Deposition
Between the inner and outer planets, there is something that separates them...what is it?
The asteroid belt.
Name 3 abiotic parts of an ecosystem and 3 biotic parts.
Abiotic: non-living. Biotic: living or once living
Water is heated in a pot until it begins boiling. The water changes from a liquid to a gas. What happens to the particles as the water changes state?
The particles gain energy, move faster, and spread farther apart.
A roller coaster is stopped at the top of a hill. As it begins racing downhill, its stored energy changes into energy of motion. What are the two types of energy involved?
Potential and kinesthetic
A mountain range is gradually worn down by wind, water, and ice over millions of years. What two processes are primarily responsible?
weathering and erosion