Biodiversity
What do we call the variety of different living things on Earth?
Biodiversity
True or False — Melting ice is a chemical change.
False (physical change)
Name one common source of air pollution.
Car exhaust, factories, burning fossil fuels
What is the unit of electric current?
Ampere
Which planet is known as the Red Planet?
Mars
What is the basic unit of life?
The cell
What two elements make up water
Hydrogen and Oxygen
What gas do plants take in during photosynthesis?
Carbon dioxide (CO₂)
Which metal is commonly used in electrical wires?
Copper
What force keeps planets in orbit around the Sun?
Gravity
Give one example of an ecosystem.
Forest, desert, ocean, tundra
What does the pH scale measure
How acidic or basic a substance is
What is one effect of acid rain?
Damages forests, harms fish, corrodes buildings
What device measures electric current in a circuit?
Ammeter
What galaxy do we live in?
The Milky Way
What is the difference between a producer and a consumer in a food chain?
Producers make their own food (plants), consumers eat others for energy
What gas do humans breathe in that is essential for life?
Oxygen
What is one renewable source of energy?
Solar, wind, hydro, biomass, geothermal
In a simple circuit, if you add more bulbs in series, what happens to their brightness?
They get dimmer
Which planet has the most moons?
Jupiter
What is the term for when a species completely disappears from Earth
Extinction
What do we call the substances that are made after a chemical reaction
Products
Why is too much CO₂ in the atmosphere a problem?
It traps heat and causes climate change/global warming
What’s the difference between series and parallel circuits?
A: Series = one path for current; Parallel = multiple paths
What is a light-year?
The distance light travels in one year