Science Flashcards
(31 cards)
An athlete can run 9 kilometers in 1 hour.
If the athlete runs at that same average speed for 30 minutes, how far will the athlete travel?
4.5 kilometers
What characteristics of motion can change without changing velocity of an object?
the position
What characteristics of motion can change without changing velocity of an object?
the position
A ball is dropped from the top of a tall building. As the ball falls, the upward force of air resistance becomes equal to the downward pull of gravity. When these two forces become equal in magnitude, the ball will
fall at a constant speed.
A ball is dropped from the top of a tall building. As the ball falls, the upward force of air resistance becomes equal to the downward pull of gravity. When these two forces become equal in magnitude, the ball will
fall at a constant speed.
What is found farthest from the center of an atom?
electron
What is found farthest from the center of an atom?
electron
When magnesium (Mg) metal is burned in the presence of oxygen (O2 ), magnesium oxide (MgO) is produced. The properties of magnesium oxide are different than the individual properties of magnesium and oxygen because magnesium oxide is
a compound.
When magnesium (Mg) metal is burned in the presence of oxygen (O2 ), magnesium oxide (MgO) is produced. The properties of magnesium oxide are different than the individual properties of magnesium and oxygen because magnesium oxide is
a compound.
Within a substance, Atoms that’s collide frequently and move independently of one another or most likely in a?
gas.
Within a substance, Atoms that’s collide frequently and move independently of one another or most likely in a?
gas.
Iron oxides, such as rust, form when iron metal reacts with oxygen in the air. What are the chemical symbols for the two elements found in iron oxide?
Fe and O
Iron oxides, such as rust, form when iron metal reacts with oxygen in the air. What are the chemical symbols for the two elements found in iron oxide?
Fe and O
What do the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine (Br) have in common?
They are nonmetals.
What do the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine (Br) have in common?
They are nonmetals.
What class of elements best conducts electricity?
Metals
What class of elements best conducts electricity?
Metals
A student divides several cubes into two groups, based on whether or not each cube can float in water. What property is the student using to classify the cubes?
density
A student divides several cubes into two groups, based on whether or not each cube can float in water. What property is the student using to classify the cubes?
density
A galaxy is best described as a cluster of
billions of stars.
A galaxy is best described as a cluster of
billions of stars.
To express the distance between the Milky Way galaxy and other galaxies, the most appropriate unit of measurement is the
Light year
To express the distance between the Milky Way galaxy and other galaxies, the most appropriate unit of measurement is the
Light year
An object composed mainly of ice is orbiting the Sun in an elliptical path. This object is most likely
a comet.
