Name the two organ systems responsible for locomotion that are controlled by the nervous system
skeletal and muscular
To make sugar dissolve faster in water, you can
stir it, heat it, or add more water
Where is a magnet the strongest?
at the poles
The boundary between a warm and a cold air mass is called
a front
How long does it take for the Earth to make one complete rotation?
24 hours or one day
What happens when a person consumes more calories than the body can use?
weight gain
Compared to particles in a liquid, particles in a solid move
slower
A seesaw is what type of simple machine?
a lever
What causes the movement of air masses over the United States?
winds and air currents
How long does it take the Earth to make one complete revolution around the sun?
one year
What nutrient is needed for growth and repair of body tissues?
protein
Elements on the Periodic Table are arranged according to their
atomic number
Why will a ball rolling eventually stop?
friction will stop it
Which Earth layer contains convection currents?
the mantle
If the moon is behind the Earth, in its shadow, this is what type of eclipse?
lunar eclipse
Which type of reproduction results in the most variation in the offspring?
sexual reproduction
How can a mixture of sand and water be separated?
use a filter
Is your home wired in a series or parallel circuit? Why?
parallel, if one goes out, all others stay lit
An air mass that forms over Canada would be called
continental polar
When the moon is not visible to us, this phase is known as
new moon
Based upon what they eat, humans are classified as
omnivores
Why don't oil and water mix?
Oil floats because it is less dense than water.
Why does a pencil in a glass of water look broken?
because of refraction
Fossils would be found in which type of rock?
sedimentary
How long does it take the moon to make one complete revolution around the Earth?
one month