Ecology
What is the original source of energy for most ecosystems?
A) The Moon
B) The Sun
C) Volcanoes
D) Plants
B) The Sun
Which of these is NOT a characteristic of living things?
A) Reproduction
B) Growth
C) Photosynthesis
D) Response to stimuli
C) Photosynthesis
What layer of the atmosphere contains most weather?
A) Stratosphere
B) Thermosphere
C) Troposphere
D) Mesosphere
C) Troposphere
What is a good conductor of electricity?
A) Plastic
B) Wood
C) Copper
D) Rubber
C) Copper
Which tool is used to magnify small objects?
A) Beaker
B) Microscope
C) Thermometer
D) Graduated cylinder
B) Microscope
Which of the following is a biotic factor in an ecosystem?
A) Water
B) Temperature
C) Soil
D) Grass
Grass ✅
What is the smallest unit of life?
A) Tissue
B) Cell
C) Organ
D) Molecule
B) Cell
Which process in the water cycle involves water vapor cooling and forming clouds?
A) Evaporation
B) Condensation
C) Precipitation
D) Infiltration
B) Condensation
Which state of matter has a definite volume but not a definite shape?
A) Solid
B) Liquid
C) Gas
D) Plasma
B) Liquid
What part of an experiment is the variable that you change?
A) Constant
B) Control
C) Independent variable
D) Dependent variable
C) Independent variable
What type of relationship is shown when both species benefit?
A) Parasitism
B) Commensalism
C) Mutualism
D) Predation
C) Mutualism
What is the main function of the cell membrane?
A) Make energy
B) Store DNA
C) Control what enters and leaves the cell
D) Break down nutrients
C) Control what enters and leaves the cell
Which natural disaster is caused by sudden movement of tectonic plates?
A) Tornado
B) Earthquake
C) Hurricane
D) Flood
B) Earthquake
In a food chain, which organism receives the least energy?
A) Producer
B) Primary consumer
C) Tertiary consumer
D) Decomposer
C) Tertiary consumer
What is the purpose of a control group in an experiment?
A) To cause change
B) To provide a baseline for comparison
C) To measure time
D) To support the hypothesis
B) To provide a baseline for comparison
What does a food web show?
A) The weather in a region
B) The flow of nutrients through soil
C) Interconnected food chains
D) Migration paths of animals
C) Interconnected food chains
Which of the following best describes a multicellular organism?
A) Made of only one cell
B) Has many specialized cells
C) Cannot reproduce
D) Can live in space
B) Has many specialized cells
What drives the rock cycle?
A) Ocean tides
B) Human activity
C) Earth’s internal heat and surface processes
D) Moon phases
C) Earth’s internal heat and surface processes
What kind of energy is stored in food?
A) Kinetic
B) Chemical
C) Thermal
D) Mechanical
B) Chemical
Which metric unit would you use to measure mass?
A) Liter
B) Meter
C) Gram
D) Celsius
C) Gram
Which human activity most directly reduces biodiversity?
A) Recycling
B) Planting trees
C) Deforestation
D) Wildlife photography
C) Deforestation
Which kingdom includes mushrooms and molds?
A) Animalia
B) Plantae
C) Fungi
D) Protista
C) Fungi
What is the result of weathering and erosion over time?
A) Formation of magma
B) Creation of fossils
C) Breakdown and transport of rocks
D) Volcanic eruptions
C) Breakdown and transport of rocks
What does the Law of Conservation of Matter state?
A) Matter can be created
B) Matter cannot change form
C) Matter cannot be created or destroyed
D) Energy becomes matter
C) Matter cannot be created or destroyed
What safety item should you wear when handling chemicals in the lab?
A) Lab coat only
B) Gloves only
C) Safety goggles
D) Apron
C) Safety goggles