Physical Science
This type of energy is stored in objects due to their position or condition, such as a stretched rubber band.
Potential
The basic unit of life in all living organisms is called a ____.
The daily rise and fall of ocean water levels are called
tides
In an experiment, the factor that is intentionally changed by the scientist is called the ____.
independent
When scientists notice repeated events or arrangements in nature, they are identifying ____.
patterns
When a substance changes from a gas to a liquid, this process is called ____.
condensation
Which organelle is known as the "powerhouse" of the cell because it produces energy?
mitochondria
The time it takes for Earth to complete one rotation on its axis is ____.
24 hours
What is the first step in the scientific method?
ask a question/identify a problem
An increase in carbon dioxide in the atmosphere is linked to this environmental concern.
climate change (global warming)
Which type of energy increases when an object’s temperature rises?
thermal energy
kinetic energy
In an ecosystem, organisms that break down dead plants and animals and return nutrients to the soil are called ____.
decomposers
The movement of tectonic plates causes what type of natural disaster in California?
Earthquakes
The factor in an experiment that is measured is called the ____.
dependent variable
A car's engine transforms chemical energy into mechanical energy. This is an example of ____.
energy conversion
This state of matter has a definite volume but takes the shape of its container.
liquid
What process do plants use to convert sunlight into energy?
photosynthesis
What phase of the Moon occurs when the entire side facing Earth is lit up?
Full moon
What kind of graph is best for showing trends over time?
a line graph
A child slides down a playground slide. What type of energy transformation is happening?
potential to kinetic
A sound wave with a higher frequency will have a ______ pitch.
higher
A predator-prey relationship helps maintain balance in an ecosystem. If the prey population decreases, what is most likely to happen to the predator population?
It will decrease
Which layer of the atmosphere contains weather like clouds, rain, and storms?
troposphere
A scientist wants to test if different amounts of sunlight affect plant growth. What would be the independent variable?
the amount of sunlight
What is the main reason recycling plastics helps the environment?
Hint: It reduces...
pollution