Chemistry
How many elements are in the periodic table?
118 elements
When was electricity created?
The 19th century
Ecosystems cycle energy and matter through different components of the ecosystem
What planets are in the solar system?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune
How do plants make food?
Plants use sunlight, carbon dioxide, and water to make food in a process called photosynthesis
What is the difference between an acid and a base?
Acids donate hydrogen ions, while bases accept them
What is voltage?
The electric potential difference between two points in an electric circuit, measured in volts (V)
What is a food web?
It is a sequence of organisms in an ecosystem in which each organism feeds on the one that precedes it
What is dark matter?
It is hypothetical form of matter that is believed to make up 85% of the matter in the universe
What is the difference between a solid, liquid, and a gas?
Solids have a fixed shape and volume, liquids have a fixed volume but take the shape of their container, and gases have neither a fixed shape nor volume
What is the formula for water?
The formula is H2O
What is Ohms Law?
How do invasive species affect ecosystems?
They negatively impact ecosystems by outcompeting native species for resources, spreading disease, and altering habitats
What is the name of the galaxy that contains our Solar System?
The Milky Way
How do magnets work?
Magnets have a magnetic field that can attract certain types of metals. The magnetic field is created by the movement of electrons in the magnet
What is the process by which a solid turns into a gas called?
It is called sublimation.
What is an electric circuit?
It is a path in which electrons from a voltage flow. The path may be a loop or a branch. It consists of a power source, a load, and a switch to turn the load on and off
In what ways to scientists study ecosystems?
How do scientists study the universe?
Scienntists use telescopes, spacecrafts, probes, and computer simulations to study the universe
What is the difference between weather and climate?
Weather refers to the atmospheric condtions in a specific place at a specific time, while climate refers to the long-term atmospheric conditions in a specific reigon
What is the difference between an element and a compound?
An element is made of one type of atom, and cannot be broken down. A compound is made up of two or more elements that are combined.
What is the difference between a conductor and an insulator?
A conductor allows electric charge to flow through, while an insulator does not allow electric charge to flow through
What are some ecosystem examples?
Examples include coral reefs, grasslands, and wetlands.
What's the difference between a meteor and a meteorite?
A meteor is space debris that burns up in Earth's atmosphere, while a meteorite is a debris that lands on the ground.
How do animals adapt to their environment?
Animals adapt to their environment by changing their behavior , physical characteristics, or diet to better suit their surroundings