1
What does the respiratory system bring into the body?
oxygen
In a chemical change, a ____ substance is formed.
new
Heat travels from _____ to _____.
hot to cold/warm to cool
Which of the following is a good insulator?
a. copper
b. rubber
c. nickel
d. steel
b. rubber
A straight, horizontal line on a distance-time graph shows what kind of movement?
a. constant change in speed
b. an increase in speed that is not constant
c. decrease in speed
d. no movement
d. no movement
Heat moves objects ____.
up
The alveoli connect the respiratory system to the _____ system to give oxygen to the cells and remove carbon dioxide from the cells.
a. digestive
b. circulatory
c. muscular
d. skeletal
b. circulatory
What is a by-product (waste) of respiration?
Carbon dioxide
When this muscle relaxes, the lungs expel air.
What is the formula for speed?
distance/time
Which of the following would be a good conductor of heat?
a. glass
b. wood
c. plastic
d. aluminum
d. aluminum
The trachea, alveoli, and bronchi are part of what body system?
Respiratory system
What is the type of heat transfer that moves liquids and gases?
Convection
Friction acts in the ______ direction of movement.
opposite
What produces weight based on the mass of an object?
gravity
Your nose does what to the air we breathe in?
a. filters it
b. dries it out
c. cools it
d. nothing
a. filters it
What part of the respiratory system expands to allow the lungs to expand and fill with air?
diaphragm
What takes up space and has mass?
matter
What three parts of the respiratory system form a passageway for air to enter the body and for waste gases to exit?
a. nose, throat, and trachea
b. heart and blood vessels
c. bladder and kidneys
d. mouth, esophagus, and stomach
a. nose, throat, and trachea
Which of the following is TRUE about oxygen?
a. We exhale oxygen
b. Oxygen is made of energy
c. Oxygen releases energy from food
d. Oxygen is food for the body
c. Oxygen releases energy from food
Which system allows air to enter and waste gases to exit?
Respiratory system
What is the type of heat transfer that transfers heat by touching?
Conduction
The mass of any object is equal to the ____ of the mass of its parts.
sum
What type of heat transfer uses electromagnetic waves?
Radiation
What two things are responsible for weight?
mass and gravity