7th Grade
What type of plants live through many growing seasons?
Perennials
What is the primary factor that determines the texture of igneous rocks?
Rate of cooling
What is the fluid friction that tends to slow an object as it moves?
Drag
Which body system provides support and rigidity to the body and stores calcium?
Skeletal
What is the formula for copper(II) chloride?
CuCl2
Which type of leaf has only one blade attached to the petiole?
Simple leaf
Which scale is used to measure the explosiveness of a volcanic eruption?
VEI
What is the term for a falling velocity at which the force of air resistance equals the object's weight and stops the object from accelerating?
Terminal
Which system coordinates the activities of the body?
Nervous
Beta-carotene, the pigment responsible for the orange color of carrots has a molecular formula C40 H6. What is its empirical formula?
C5H7
What is the scientific name for a flowering plant?
Angiosperm
What is the most valuable precious metal?
Platinum
Which term refers to any change in velocity?
Acceleration
What do we call the long, straight shaft of a bone?
Diaphysis
Write the type of reaction shown: HClO3(aq)+KOH(aq)H2O(l)+KClO3(aq)
What is the sum of all chemical processes of life?
Metabolism
What is a soil substance composed of decayed organisms' particles?
Humus
What is the product of an object's mass and its velocity?
Momentum
What are the two broad divisions of the skeletal system?
Axial and Appendicular
Write the type of reaction shown: Zn(s)+2HCl(aq)H2(g)+ZnCl2(aq)
Single Displacement
What do we call the ripened flower ovary?
Fruit
Which metal is used in radiation shielding, automobile batteries, and small-arms ammunition?
Lead
Who discovered the laws of motion and gravitation?
Newton
What do we call a group of muscles connected to a single motor neuron?
Motor unit
Write the type of reaction shown: 2K(s) + I2(g)2KI
Combination