What is Science?
Can be fair and valid only when a single variable should be changed at a time.
Scientific Investigation
The masses of objects in the solar system can be reported by comparing them to the mass of Earth. Which of these planets in the solar system most likely has a mass more than 300 times greater than the mass of Earth?
Jupiter
Positive Charge (+1)
Proton
Plants and animals both have structures for
reproducing
The stems of many plants will bend in the direction of _______.
sunlight
These should be as similar as possible to the real thing.
Models
Planets are classified as either inner planets or outer planets based on their distance from the sun. What is found between the inner and outer planets?
asteroids
The energy of a compound that changes as its atoms are rearranged.
Chemical Energy
Michelle eats a ham sandwich. What is the first organ that digests the eaten sandwich?
stomach
A community of living things and the nonliving things around them
Ecosystem
The name given to something that could change in a scientific investigation.
Variable.
When might you use a telescope?
To see more detail about the area in the sky.
Light Energy, Sound Energy, Electrical Energy, & Thermal Energy
Forms of Kinetic Energy
Which of the following structures forms a protective layer between the environment and the inside of a body?
skin
Any harmful substance that gets into the environment. Can kill organisms or cause diseases.
pollution
All the ways scientists do investigations.
Scientific Method
Clouds that form near the ground.
Fog
The law that states that energy cannot be created or destroyed but can be changed from one form to another.
Law of Conservation of Energy
The ______ is the control center of the nervous system. It sends and receives signals to and from the entire body.
brain
Protecting the ecosystems and the organisms living in them.
conservation
An investigation that is controlled.
Experiment
During a visit to an observatory, Sarah observed the moon, Venus, the Sun, and the star Sirius. Which of these objects is outside of the solar system?
Sirius
What are the three forms of matter?
Solid, gas, Liquid
Which of the following is one of the main purposes of leaves?
to absorb sunlight
All of the living and nonliving things in nature
Enviornment