Unit 1: Scientific Knowledge
When scientists carefully watch and record what happens during an experiment, they are:
Making observations
These organisms make their own food using sunlight.
Producers
This body system is responsible for pumping blood throughout the body.
The Circulatory System
A push or a pull on an object is called this.
These tiny living things are too small to be seen without a microscope.
Mircoorganisms
A student measures the length of the gummy bear and reports it is 1.9cm. Which type of data is this?
Quantitative data
This type of consumer eats both plants and animals.
Omnivore
This organ is known as the body's control center.
The brain
This force occurs when two surfaces rub against each other.
Friction
This microorganism can only reproduce inside a host cell.
A Virus
This part of CER includes observations, measurements, or data that support the claim.
Evidence
The original source of energy for most food chains is this.
The Sun
This system breaks down food so the body can absorb nutrients.
The digestive system
Pushing a shopping cart harder causes it to accelerate more. This demonstrates Newton's ___ Law.
Second
This microorganism is a single-celled organism that can be helpful or harmful.
Bacteria
A student measures the temperature of water as 25°C and records that it feels 'warm to the touch.' Which type of data describes what he RECORDED?
Qualitative data
A diagram showing many interconnected food chains is called this.
Food Web
This system takes in oxygen and removes carbon dioxide.
Respiratory System
For every action, there is an _______ and _________ reaction.
equal, opposite
This group of microorganisms includes molds and yeasts.
Fungi
In a lab, students found that salt dissolved faster in hot water than cold water. Which part of CER would explain why higher temperatures increase the rate of dissolving?
Reasoning
A tick feeding on a dog is an example of this type of symbiosis.
Parasitism
These blood cells help fight infections.
White Blood Cells
A student pushes a box with 50 N of force to the right, while another student pushes with 30 N to the left. What is the net force?
20 N to the right
This microorganism can make its own food through photosynthesis and is often found in water.
Algae