Organisms and Environments
What breaks down dead plants and animals into minerals in a food web?
Decomposers
What unit do you measure force in?
Newtons
What forms when two air masses meet and create weather?
Front
A Good conductor, malleable and ductile.
Metals
Which two particles make up the nucleus of an atom?
Protons and Neutrons
What do omnivores eat?
Plants and Meat
An objects tendency to resist a change in motion?
Inertia
What causes the seasons on the Earth?
The earth`s Tilt
How many neutrons are in the nucleus of a potassium atom with a mass number of 39 and an atomic number of 19?
20
Why does the sun appear to be the brightest star?
Closest star to earth
In a food web, which of these is a producer?
Humans, Lizards, Spiders , or Grass
Grass
A toy truck is at rest on the floor. Which statement describes the forces acting on the toy truck?
balanced or unbalanced? motion or no motion?
balanced, no motion
During what lunar phases is the tide the highest?
Full Moon and New moon
Name an element with same chemical properties as Iodine?
F, Cl , Br, At , Ts
What is it called when weathered rock is carried away?
Erosion
Plants that live on the floors of densely populated forests compete for sunlight. Which type of leaves are most likely found on plants that are best suited to living on the floor of a dense forest?
A. Leaves that are needle-shaped
B. Leaves that are smallest
C. Leaves that store the greatest amount of water
D. Leaves with the greatest amount of surface area
D. Leaves with the greatest amount of surface area
A student pushes a 51.5 kg bookshelf across a smooth floor with a net force of 67 N. What is the acceleration of the bookshelf?
1.3 m/s2
When a cold air mass crashes into a warm air mass, which kind of front is formed?
Cold Front
Which pair of elements are nonmetals and gases at room temperature and normal atmospheric pressure?
Boron and Aluminum
Cobalt and Nickel
Fluorine and Chlorine
Fluorine and Chlorine
Process that happens when continental crust meets oceanic crust and volcanoes occur?
Subduction
Immediately after a forest fire, the primary consumers in the area will compete most for which biotic factor?
Food
A sledgehammer has a mass of 3.5 kg. If the acceleration of the hammer was 4.0 m/s2 , what is the net force being applied?
14 N
Causes the tides on Earth?
Moons gravitational pull
How many energy levels and valence electrons does the element in group 15 period 3 have?
3 levels , 5 Valence Electrons
Ca + 2 H2O ----> Ca(OH)2 + H2
Is this equation balanced or unbalanced?
Balanced