Waves
What is a wave?
A disturbance that moves energy from one place to another.
What is an ecosystem?
A system made up of living and nonliving things that interact in an environment.
What is weathering?
The breaking down of rocks into smaller pieces by wind, water, or ice.
What are the three main stages of the water cycle?
Evaporation, condensation, and precipitation.
What causes day and night on Earth?
Earth's rotation on its axis
What are the two main types of waves?
Mechanical Waves and Electromagnetic Waves
What is the difference between a producer and a consumer?
What is erosion?
The movement of rock and soil by wind, water, or ice.
What happens during condensation?
Water vapor cools and changes into liquid water, forming clouds.
What force keeps the planets in orbit around the Sun?
Gravity
How does sound travel through different materials? (Soild, Liquid, Gas) Describe for each state of matter.
Sound travels fastest through solids, slower through liquids, and slowest through gases.
What role do decomposers play in an ecosystem?
They break down dead organisms and recycle nutrients into the soil.
Which type of weathering involves breaking rocks without changing what they are made of?
Physical weathering.
How does the Sun help power the water cycle?
It heats water, causing evaporation.
What are the three main types of rock in the rock cycle?
Igneous, sedimentary, and metamorphic
What part of a wave measures how tall it is?
Amplitude
If a new predator is introduced to an ecosystem, how might it affect the food chain?
It could decrease the population of its prey and cause changes in the balance of the ecosystem.
How does plant growth cause weathering?
Roots grow into cracks in rocks and break them apart.
What is ground water?
Water that is stored under the Earth's surface in soil and rocks.
How can friction affect motion?
Friction slows down or stops objects in motion.
What happens to a light wave when it hits a mirror?
It reflects or bounces back
What would happen if all the plants in an ecosystem disappeared?
The herbivores would have no food, leading to a chain reaction that affects all organisms in the ecosystem.
Whatis one way people can help prevent erosion?
Planting trees or grass to hold the soil in place.
What happens when too much precipitation falls in a short amount of time?
Flooding can occur.
Why do we see different phases of the Moon?
Because of how the Moon orbits the Earth and how sunlight reflects off it.