1
What type of motion is a flat, horizontal line on a speed/time graph showing us?
a. constant speed
b. speed is increasing
c. speed is zero
d. decreasing speed
a. constant speed
Your lungs take in oxygen and expel ____.
carbon dioxide
What type of change is happening to the food in our stomach when it is being digested?
a. solution
b. mixture
c. chemical change
d. physical change
c. chemical change
The function of the respiratory system is to ______.
a. digest food for energy and nutrients
b. support and protect
c. allow air to enter and waste gases to exit
d. excrete solid and liquid waste
The circulatory system carries oxygen from your _____ to other cells in the body and removes carbon dioxide.
a. kidneys
b. stomach
c. lungs
d. intestines
c. lungs
Roller skates move faster on a roller rink surface versus the sidewalk. Why is this true?
a. because there is less friction
b. because there is more friction
c. because it is inside
d. because there is less wind
a. because there is less friction
The skull, vertebrae, hips, arms, and legs are all types of _____ in the human body.
a. cartilage
b. nerves
c. bones
d. muscles
c. bones
Which of the following are major bones in our body?
a. cartilage
b. the brain and spinal cord
c. muscles
d. the skull and vertebrae
d. the skull and vertebrae
The main purpose of the digestive system is to break down food for ______.
a. carbon dioxide
b. energy and nutrients
c. oxygen
d. liquid and waste products
b. energy and nutrients
Blood contains fluid and _____ that carry oxygen, nutrients, and waste.
a. white blood cells
b. nerves and signals
c. red blood cells
d. bacteria cells
c. red blood cells
a. Because the temperature will not hold more water vapor
b. Because the water in the air cannot remain constant
c. Because energy cannot be created or destroyed
d. Because heat energy flows from warm to cool objects
Which of the following indicates motion?
a. running water
b. guitar string
c. bicycle
d. sunlight
a. running water
Metals let heat pass through them easily because they are considered to be good _____.
conductors
The _____ system gets nutrients into the blood and the _____ system gets them to your cells.
a. excretory; circulatory
b. digestive; circulatory
c. circulatory; digestive
d. digestive; excretory
b. digestive; circulatory
Which body system transports carbon dioxide from cells to the lungs?
a. excretory
b. nervous
c. circulatory
d. digestive
c. circulatory
What two factors are needed to measure speed?
distance and time
Which of the following bones does our body have to protect our vital, soft organs?
a. ankle bones
b. rib cage
c. jaw bone
d. arm bones
b. rib cage
Which body system provides movement for the body?
muscular
The difference between voluntary and involuntary muscles is that _________.
a. voluntary muscles are never strong
b. voluntary muscles work on their own without you having to think about them
c. involuntary muscles keep working without you thinking about them
d. involuntary muscles move when you think about them
c. involuntary muscles keep working without you thinking about them
Blood flowing through your capillaries delivers _____ to the cells in the body and takes waste away from the cells.
a. energy from photosynthesis
b. food and acids
b. oxygen and nutrients
d. carbon dioxide
b. oxygen and nutrients
Why does a metal bench feel hotter than a wooden bench on a sunny, summer day?
Because metal conducts heat better than wood.
Why does your home have insulation?
a. It keeps the rain outside your home
b. It conducts heat into or our of your home
c. It fills empty space
d. It stops conduction of heat into or out or your home
d. It stops conduction of heat into or out of your home.
The nervous system includes the _____.
a. skull and vertebrae
b. brain and spinal cord
c. stomach and intestines
d. heart and blood vessels
a. skull and vertebrae
The brain and spinal cord are part of which body system?
nervous system
How are the functions of the small intestine and the lungs similar?
a. Both turn your body's unneeded materials into liquid that can be removed from the body when you sweat.
b. Both separate out the vitamins and minerals your body needs from the food you eat.
c. Both separate needed from unneeded parts of the materials our bodies take in.
d. Both help eliminate carbon dioxide from the blood as you breathe.
c. Both separate needed from unneeded parts of the materials our bodies take in.