7th Grade
8th
9th
10th
11th
100

What type of plants live through many growing seasons?

Perennials

100

What is the primary factor that determines the texture of igneous rocks?

Rate of cooling

100

What is the fluid friction that tends to slow an object as it moves? 

Drag

100

Which body system provides support and rigidity to the body and stores calcium?

Skeletal

100

What is the formula for copper(II) chloride?

CuCl2

200

Which type of leaf has only one blade attached to the petiole?

Simple leaf

200

Which scale is used to measure the explosiveness of a volcanic eruption?

VEI

200

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

200

Which system coordinates the activities of the body?

Nervous

200

Beta-carotene, the pigment responsible for the orange color of carrots has a molecular formula C40 H6. What is its empirical formula?

C5H7

300

What is the scientific name for a flowering plant?

Angiosperm

300

What is the most valuable precious metal?

Platinum

300

Which term refers to any change in velocity?

Acceleration

300

What do we call the long, straight shaft of a bone?

Diaphysis

300

Write the type of reaction shown: HClO3(aq)+KOH(aq)H2O(l)+KClO3(aq)

Double Displacement
400

What is the sum of all chemical processes of life?

Metabolism

400

What is a soil substance composed of decayed organisms' particles?

Humus

400

What is the product of an object's mass and its velocity?

Momentum

400

What are the two broad divisions of the skeletal system?

Axial and Appendicular

400

Write the type of reaction shown: Zn(s)+2HCl(aq)H2(g)+ZnCl2(aq)

Single Displacement

500

What do we call the ripened flower ovary?

Fruit

500

Which metal is used in radiation shielding, automobile batteries, and small-arms ammunition?

Lead

500

Who discovered the laws of motion and gravitation?

Newton

500

What do we call a group of muscles connected to a single motor neuron?

Motor unit

500

Write the type of reaction shown: 2K(s) + I2(g)2KI

Combination

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