Explo Science Final Review

Definitions

100

Internal physical and chemical balance.

Kinetic Energy

pH Scale

Prototype

Homeostasis

Potential Energy

Homeostasis

200

Stored energy based on position/height.

Kinetic Energy

pH Scale

Prototype

Homeostasis

Potential Energy

Potential Energy

300

Energy of an object in motion.

Kinetic Energy

pH Scale

Prototype

Homeostasis

Potential Energy

Kinetic Energy

400

An early version or model of a product.

Kinetic Energy

pH Scale

Prototype

Homeostasis

Potential Energy

Prototype

500

A range used to measure acidity.

Kinetic Energy

pH Scale

Prototype

Homeostasis

Potential Energy

pH Scale

Chemical/Physical Changes

100

Which of the following is a chemical change?

a) Slicing a loaf of bread

b) A rusted bicycle

c) Mixing sugar in water

d) Breaking a glass

A rusted bicycle. 

200

Which of the following is a physical change?

a) Slicing a loaf of bread

b) A rusted bicycle

c) Baking a cake

d) Burning wood

Slicing a loaf of bread

300

Which of the following is a chemical change?

a) Melting Ice

b) Cutting a piece of paper

c) Mixing sugar in water

d) Baking a cake

Baking a cake.

400

Which of the following is a physical change?

a) Baking soda and vinegar

b) Crushing a can

c) Milk going sour

d) Digesting food

Crushing a can.

500

Which of the following is a chemical change?

a) Slicing a loaf of bread

b) Digesting food

c) Mixing sugar in water

d) Breaking a glass

Digesting food

Random

100

If a liquid has a pH of 77 , it is considered:

a) Acidic

b) Basic

c) Neutral

d) Toxic

Neutral

200

When you sweat to cool down, your body is attempting to maintain:

a) Combustion

b) Homeostasis

c) Potential Energy

d) Velocity

Homeostasis

300

A wooden spoon is used in a hot pot because wood is a good:

a) Conductor

b) Insulator

c) Prototype

d) Variable

Insulator

400

Which of the following is a non-renewable energy source?

a) Wind

b) Solar

c) Natural Gas

d) Geothermal

Natural Gas

500

Energy cannot be created or destroyed, only changed. This is the Law of:

a) Gravity

b) Conservation of Energy

c) Relativity

d) Thermal Dynamics

Conservation of Energy

Biology

100

Nylon and Plastic are examples of materials that are:

a) Organic

b) Synthetic

c) Natural

d) Elemental

Synthetic

200

Which simple machine is used to split wood or hold a door open?

a) Lever

b) Pulley

c) Wedge

d) Wheel and Axle

Wedge

300

The heart is the primary organ of which body system?

a) Respiratory

b) Digestive

c) Circulatory

d) Nervous

Circulatory

400

In the Engineering Design Process, what do you do after testing a prototype?

a) Give up

b) Improve/Optimize

c) Start over

d) Sell it immediately

Improve/Optimize

500

The brain is the primary organ of which body system?

a) Respiratory

b) Digestive

c) Circulatory

d) Nervous

Nervous

Fill in the Blank

100

Hydroelectric power is a _________   resource.

renewable

200

The ___________   variable is the “cause” in an experiment.

independent

300

Photosynthesis in plants is a ____________   change.

chemical

400

A factor that does not change between test groups is a ___________.

constant

500

A person running down a track has ________  energy.

kinetic