Atoms and PTE
Chemical Reactions
Forces and Motion
Genes and Heredity
Earth Space
100
  1. Atoms are made up of three main particles: protons, _, and electrons.

neutrons

100
  1. A chemical reaction involves the breaking and forming of _.

bonds

100

According to Newton's first law, an object at rest will stay at rest unless acted upon by a(n) _ force.

Unbalanced

100

The physical appearance of an organism is known as its _.

Phenotype

100

What is the primary method scientists use to study geologic time?

  • A) Fossil records
  • B) Astronomical studies
  • C) Chemical reactions
  • D) Weather patterns

A) Fossil records

200
  1. The _ of an atom contains protons and neutrons.

nucleus

200

The substances initially involved in a chemical reaction are called _.

reactants

200

The unit of force in the International System of Units (SI) is the _.

Newton

200

A _ is a segment of DNA that codes for a specific trait.

gene

200

Explain why fossils are important for understanding geologic time.

Fossils are important for understanding geologic time because they provide evidence of past life forms and environments, helping scientists reconstruct Earth's history and evolutionary processes.

300
  1. Elements in the same column of the Periodic Table are known as a _.

Group

300

Which of the following is a sign of a chemical reaction?

  • A) Change in size
  • B) Formation of a gas
  • C) Movement of molecules
  • D) Increase in weight

B) Formation of a gas

300

When two forces acting on an object are equal and opposite, they are said to be _.

Balanced

300

Which of the following is NOT a heritable trait?

  • A) Eye color
  • B) Height
  • C) Favorite food
  • D) Hair color

C) Favorite food

300

A geologist finds and area of undisturbed sedimentary rock.  The __________ layer is most likely the oldest.

Lowest

400

  1. What is the charge of a proton?

    • A) Negative
    • B) Neutral
    • C) Positive
    • D) No charge

C) Positive

400

Which of the following is NOT a chemical reaction?

  • A) Burning wood
  • B) Melting ice
  • C) Baking a cake
  • D) Digesting food

B) melting ice

400

If the net force acting on an object is zero, the object will:

  • A) Accelerate
  • B) Decelerate
  • C) Maintain a constant speed
  • D) Change direction

C) Maintain a constant speed

400

What do we call the genetic makeup of an organism?

  • A) Genome
  • B) Phenotype
  • C) Allele
  • D) Chromatid

A) Genome

400

Which of the following occurs when the moon moves through the earth's shadow?


A lunar eclipse

500

Which of the following elements is a noble gas?

  • A) Oxygen
  • B) Carbon
  • C) Neon
  • D) Sodium

Neon

500

What type of reaction absorbs energy from the surroundings?

  • A) Exothermic
  • B) Endothermic
  • C) Combustion
  • D) Neutralization

B) Endothermic

500

Which of the following best describes inertia?

  • A) A measure of an object's mass
  • B) The tendency of an object to resist changes in its state of motion
  • C) The speed of an object in a given direction
  • D) The force exerted by a magnetic field

B) The tendency of an object to resist changes in its state of motion

500

Explain how genes influence an individual's traits.

Genes influence an individual's traits by providing the instructions for making proteins, which determine the characteristics and functions of the body.

500

What characteristic do all the inner planets have in common?

A) ring system
B) liquid water
C) rocky surface
D) thick atmosphere

B) rocky surface

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