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Worksheets

Science Challenge

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

What is a chemical reaction?

a)

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

b)

A chemical reaction is a physical change in matter.

c)

A chemical reaction is a mathematical equation.

d)

A chemical reaction is a biological process.

2.

Name the process by which plants make their food.

a)

Respiration

b)

Fermentation

c)

Transpiration

d)

Photosynthesis

3.

What is the unit of electric current?

a)

Ampere (A)

b)

Volt

c)

Joule

d)

Ohm

4.

Which organ is responsible for pumping blood throughout the body?

a)

brain

b)

stomach

c)

heart

d)

liver

5.

What happens when you mix baking soda and vinegar?

a)

Carbon dioxide gas is released.

b)

The mixture becomes highly flammable

c)

The mixture produces a foul odor

d)

The mixture turns into a solid

6.

What is the role of producers in an ecosystem?

a)

Producers consume food from other organisms.

b)

Producers are responsible for decomposing organic matter.

c)

Producers are only found in aquatic ecosystems.

d)

Producers create food through photosynthesis or chemosynthesis.

7.

What is the function of the nucleus in a cell?

a)

Energy production

b)

Control center and contains genetic material

c)

Waste elimination

d)

Cell wall formation

8.

What is the main source of energy in most ecosystems?

a)

Sunlight

b)

Volcanic eruptions

c)

Moonlight

d)

Wind

9.

What is the function of the nervous system?

a)

Produce hormones for growth.

b)

Transmit signals and coordinate bodily functions.

c)

Regulate body temperature.

d)

Digest food and absorb nutrients.

10.

What is the formula for Ohm's Law?

a)

I = V + R

b)

I = R / V

c)

I = V / R

d)

I = V x R

11.

How do muscles work in the human body?

a)

Muscles work by generating heat through friction

b)

Muscles work by absorbing nutrients from the bloodstream

c)

Muscles work by expanding and contracting

d)

Muscles work by contracting and relaxing in response to signals from the nervous system.

12.

What is the role of decomposers in an ecosystem?

a)

Decomposers create new organisms in an ecosystem

b)

Decomposers help in the process of photosynthesis in an ecosystem

c)

Decomposers break down dead organisms and organic matter into simpler substances, releasing nutrients back into the ecosystem for other organisms to use.

d)

Decomposers reduce the amount of nutrients in an ecosystem

13.

What is the difference between renewable and non-renewable energy sources?

a)

Renewable energy sources are more expensive than non-renewable sources

b)

Renewable energy sources are less efficient than non-renewable sources

c)

Non-renewable energy sources are better for the environment than renewable sources

d)

Renewable energy sources can be replenished naturally and are sustainable, while non-renewable energy sources are finite and will eventually run out.

14.

What is the function of the respiratory system?

a)

Transport of nutrients

b)

Exchange of oxygen and carbon dioxide

c)

Digestion of food

d)

Regulation of body temperature

15.

What is the relationship between voltage, current, and resistance in an electrical circuit?

a)

V = I / R

b)

V = I ^ R

c)

V = I + R

d)

V = I * R