2013-2014 TMSCA School Science Test #1

Question 1

The factor that a scientist changes during a controlled experiment is called the ______ variable.

A: Dependent
B: Responding
C: Initial
D: Independent

Answer 1

D: Independent

Question 2

Which state of matter undergoes changes in volume most easily?
A: Solid 
B: Liquid 
C: Gas 
D: Ice

Answer 2

C: Gas

Question 3

A large, complex molecule built from a smaller molecule joined together is a/an ______.

A: Composite
B: Polymer
C: Monomer
D: Alloy

Answer 3

B: Polymer

Question 4

In a human ear, sound is collected by the \_\_\_\_\_\_ initially.
A: Stirip 
B: Anvil 
C: Hammer
D: Pinna

Answer 4

D: Pinna

Question 5

A mass of rock formed when a large body of magma cools inside the crust is called a ____.

A: Neck
B: Dike
C: Lava Plateau
D: Batholith

Answer 5

D: Batholith

Question 6

Deltas are built up by _______.

A: Deposition
B: Leaching
C: Abrasion
D: Erosion

Answer 6

A: Deposition

Question 7

Deposition of calcium carbonate in caves are called ______.

A: Shale
B: Dripstone
C: Sinkholes
D: Impermeable rock

Answer 7

B: Dripstone

Question 8

The process of burning s fuel to change energy into thermal energy is called ______.

A: Heat
B: Electric
C: Energy
D: Combustion

Answer 8

D: Combustion

Question 9

The food tube that connects the throat and stomach is the ______.

A: Duodenum
B: Epiglottis
C: Esophagus
D: Small Intestine

Answer 9

C: Esophagus

Question 10

The reproductive organs of angiosperms are \_\_\_\_\_\_\_\_\_\_.
A: Flower
B: Dicots
C: Monocots 
D: Fronds

Answer 10

A: Flowers

Question 11

Materials that allow water to easily pass through them are __________.

A: Permeable
B: Impermeable
C: Saturated
D: Unsaturated

Answer 11

A: Permeable

Question 12

Electrons involved in bonding between atoms are \_\_\_\_\_\_\_\_. 
A: Valence electrons 
B: Inside the nucleus 
C: Closest to the nucleus
D: Positively charged

Answer 12

A: Valence electrons

Question 13

In some reflex actions, skeletal muscles contract without the involvement of ________.

A: Motor neurons
B: Interneurons
C: The spinal cord
D: The brain

Answer 13

D: The brain

Question 14

Minerals containing_______ are attracted to a magnet.

A: Silicon and oxygen
B: Iron or nickel
C: Carbon and silicon
D: Carbon

Answer 14

B: Iron or nickel

Question 15

Longitudinal seismic waves are known as _____ waves.

A: Primary
B: Secondary
C: Surface
D: Transverse

Answer 15

A: Primary

Question 16

During mitosis two new ________ form around the chromatids.

A: Chromosomes
B: Nuclei
C: Cells
D: DNA molecules

Answer 16

B: Nuclei

Question 17

Neutralization is a reaction between a/an ________.

A: Acid and a base
B: Acid and a metal
C: Base and a salt
D: Salt and water

Answer 17

A: Acid and a base

Question 18

The material through which a wave travels is called a _______.

A: Medium
B: Vibration
C: Crest
D: Trough

Answer 18

A: Medium

Question 19

The ____ is a strong sheet of muscle that forms the floor of the chest cavity.

A: Dermis
B: Trachea
C: Diaphragm
D: Bronchi

Answer 19

C: Diaphragm

Question 20

Earth’s core is made mostly of which two metals?

A: Gold and silver
B: Nickel and iron
C: Uranium and iron
D: Copper and nickel

Answer 20

B: Nickel and iron

Question 21

Cells In he blood that contain hemoglobin and carry oxygen are called _______.

A: White blood cells
B: Red blood cells
C: Platelets
D: Ventricles

Answer 21

B: Red blood cells

Question 22

An ionic bond is attraction between __________.

A: Similarly charged ions
B: Oppositely charged ions
C: Neutral ions
D: Neutral atoms

Answer 22

B: Oppositely charged ions

Question 23

The pressure of water against a plant’s cell wall is _______ .

A: turgor pressure
B: negative feedback
C: mutualism
D: blood pressure

Answer 23

A: turgor pressure