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Motion
The Atom
Structure of Matter
Earth
Forces
100
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?
What is 4.5 kilometers.
100
Which of the following best describes an atom? A. protons and electrons grouped together in a random pattern, B. protons and electrons grouped together in an alternating pattern, C. a core of protons and neutrons surrounded by electrons, D. a core of electrons and neutrons surrounded by protons
What is a core of protons and neutrons surrounded by electrons,
100
What do the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine (Br) have in common? A. They are noble (inert) gases., B. They are nonmetals., C. They have the same thermal conductivity., D. They have the same number of protons
What is They are nonmetals
100
The galaxies pictures above would best be classified as
What is spiral galaxies
100
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
What is fall at a constant speed.
200
How much time is required for a bicycle to travel a distance of 100 m at an average speed of 2 m/s?
What is 50 sec.
200
Which of the following is found farthest from the center of an atom? A. nucleus , B. proton , C. neutron , D. electron
What is an electron
200
Which class of elements best conducts electricity? A. metals , B. nonmetals , C. semimetals , D. noble (inert) gases
What is metals ,
200
A galaxy is best described as a cluster of
What is Billions of Stars.
200
Two students are pushing a cart one opposite ends, one student is pushing at 200 N and the other pushing at 150 N. The cart will move as if it were acted on by a single force with a magnitude of
What is 50 N
300
Which of the following represents the velocity of a moving object? A. 40 , B. 40m north , 40 m/s , 40 m/s north
What is 40 m/s north
300
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. a solution. ,B. a mixture., .C a compound., D. an element.
What is a compound.,
300
In a comparison of metals to nonmetals, metals tend to have : A.lower melting points and greater conductivity than nonmetals. ,B. lower conductivity and lower density than nonmetals. ,C. higher density and lower melting points than nonmetals. ,D. greater conductivity and higher melting points than nonmetals.
What is greater conductivity and higher melting points than nonmetals
300
To express the distance between the Milky Way galaxy and other galaxies, the most appropriate unit of measurement is the
What is light-year
300
A force of 5N is required to increase the speed of a box from a rate of 1.0 m/s to 3.0 m/s within 5s along a level surface. What change would most likely require additional force to produce the same results?
What is increase the mass of the box.
400
Which characteristic of motion could change without changing the velocity of an object?
The position
400
Within a substance, atoms that collide frequently and move independently of one another are most likely in a A. liquid. , B. solid. ,C. gas., D. crystal.
What is a gas
400
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? A. weight, B. density , C. conductivity , D. mass
What is density
400
Which of the following sets contains only objects that shine as a result of reflected light?
What is moons, planets, and comets
400
What is the density of a 64-g iron cube that displaces 8mL of water?
8 g /ml
500
Red-clay bricks have a density of approximately 2000kg/m, Air has a density of 1 kg/m. Which of the following has the lowest mass? A. 2 m of bricks , B. 4 m of bricks, C. 6000 m of air ,D.10,000 m of air .
What is 2 m of bricks
500
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? A. I and O ,B. Ir and O, C. Fe and O, D. Pb and O
What is Fe and O
500
Copper (Cu) reacts with oxygen (O) to form copper oxide (CuO). The properties of CuO are most likely : A. different from copper or oxygen. ,B. similar to both copper and oxygen., C. similar only to copper., D. similar only to oxygen.
What is different from copper or oxygen.
500
An object composed mainly of ice orbiting the Sun in an elliptical path. This object is most likely
What is a comet
500
Which of the following forms of energy is released or absorbed in most chemical reactions? A. light energy , B. electrical energy ,C. sound energy ,D. heat energy
What is heat energy