Body Systems
What is the condition reached when the body system work together to maintain internal stability?
Homeostasis
Which outcome would most likely suggest that data collected is unreliable?
Other scientists conduct the same study but find different data.
Which is a principle of cell theory?
Cells come from cells.
According to Newton’s first law of motion, when will an object at rest begin to move?
when an unbalanced force acts upon it
Which is the smallest possible particle of an element
or matter?
The atom.
Which organ system eliminates liquids and gaseous wastes from the body?
The Excretory System.
Fernanda is working on a physics project. She is experimenting by rolling a marble down a ramp and then seeing how far it rolls along the floor after leaving the ramp.
Which would be the dependent variable in Fernanda’s experiments?
The distance the marble rolls after the ramp.
Neurons are brain cells. Where would a new neuron come from?
Other cells.
An object is moving north at a constant speed. A force of 5 N begins to push the object east at the same moment that a force of 5 N begins to push it west. What will happen to the object?
The object will continue moving north.
Which best describes a molecule?
a unit made of two or more atoms
Which body system regulates the interaction between the skeletal system and muscular system?
The Nervous System
What should scientists do after completing a scientific investigation?
Confirm the results.
Which is the power station of the cell?
The Mitochondria.
An object has a mass of 5 kg. What force is needed to accelerate it at 6 m/s2? (Formula: F=ma)
30 N
What is the name of a group of cells thar perform the same function?
A tissue.
Which three body systems coordinate to move the legs?
The skeletal, muscular and nervous system.
Scientists are investigating how well different microphones capture and record sounds. They use tools that show how loud the high and low sounds are and a tool that shows how much noise is recorded along with the actual sounds.
Which is a scientific question that could be included in this investigation?
Which microphone captures a singer’s low sounds the loudest?
Which organelles are part of the plant cell only?
The cell wall and the chloroplast.
Rahul sits in a chair reading a book. Which force is equal to the force Rahul exerts on Earth?
Rahul’s weight
The lungs, nose, and trachea are organs of the respiratory system. Could you describe the function of these organs ?
They deliver oxygen to the blood.
Which structure(s) carries blood to the heart, so the heart has its own supply of oxygen and nutrients to perform its function?
The coronary arteries.
Scientists are studying different jackets made for extremely cold, snowy weather. They are trying to find jackets that are warm but also thin enough to allow for natural bodily movement.
Which question could the scientists answer scientifically?
Which jacket traps the most heat?
Which could be a reason viruses are considered nonliving things?
Viruses are made of DNA and proteins, but not cells.
Two people push on the same door from opposite sides.
They will only see the door move when...
One person exerts more force than the other so that the forces are unbalanced.
Exercising, coordinating muscles and controlling breathing depends on which two body systems?
The respiratory system and nervous system.