Why do cacti have shallow, wide-spreading roots?
To collect water quickly from light rainfalls before it evaporates.
What is the primary source of energy for all food chains?
The sun, which plants convert into energy through photosynthesis.
What are the 4 inner planets?
Mercury, Venus, Earth, and Mars.
What is motion?
Motion is a change in an object's position relative to a reference point.
What powers the water cycle?
The sun provides the heat energy necessary for evaporation and sublimation.
What is the purpose of thorns on a plant?
To protect the plant from being eaten by animals.
Which organism is a producer in a forest ecosystem?
Trees, grass, algae.
What are the 4 outer planets?
Jupiter, Saturn, Uranus, and Neptune.
What happens when force is applied?
An applied force can cause a resting object to move, a moving object to speed up, slow down, or change direction.
Where is most of the Earth's water found?
Over 96% of Earth's water is stored in the oceans, while a significant portion of fresh water is stored as groundwater, icebergs, and glaciers.
Why do some trees drop their leaves in the fall?
To conserve water during cold or dry seasons.
What do the arrows in a food chain represent?
The flow of energy
What separates the inner and outer planets?
The Main Asteroid Belt.
What is inertia?
It is the tendency of an object to resist changes in its state of motion
What is the process of water evaporating from plants?
This is called transpiration, which is similar to human perspiration.
What adaptation allows some plants to grow in poor soil?
Carnivorous trapping mechanisms, such as in the Venus flytrap, which obtain nutrients from insects.
What is a primary consumer?
An herbivore that eats producers.
Which planet is the hottest?
Venus, due to a runaway greenhouse gas effect, despite Mercury being closer to the Sun.
What forces act on a resting object?
An object resting on a table has two main forces: gravity and the normal force/support from the table
How do clouds form?
Water vapor rises, cools, and condenses around tiny particles in the atmosphere to form clouds.
How do hooks or barbs on seeds help with survival?
They attach to passing animals, enabling seed dispersal to new locations.
Which organism is a tertiary consumer?
A hawk eating a snake that ate a mouse.
What is the largest inner planet?
Earth
How are force, mass, and acceleration related?
According to Newton's Second Law, more force is needed to move objects with more mass, and more mass results in less acceleration for a given force.
What is the difference between infiltration and runoff?
Infiltration is the process of water soaking into the soil, whereas runoff is water that flows over the land surface into streams and lakes.