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100

Daniel wants to help his grandmother mow the lawn at her house. Which of the following machines do you recommend using?

  1. Blender

  2. Lawn mower

  3. Pulley

Lawn mower

100

The first working product that uses a design is called a:

  1. Method 

  2. Technology

  3. Redesign 

  4. Prototype

Prototype

100

The change that animals present during their life cycle is known as:

  1. Bipartition

  2. Symbiosis

  3. Metamorphosis

Metamorphosis

100

Which animal group includes cold-blooded vertebrates that have dry, scaly skin?

  1. Mammals

  2. Amphibians

  3. Reptiles

Reptiles

100

The place where an organism lives is known as:

  1. Ecosystem

  2. Biosphere

  3. Habitat

Habitat

200

Living things that decompose waste and dead plant and animal matter are:

  1. Producers

  2. Consumers

  3. Decomposers

Decomposers

200

Omnivorous animals are those that eat all kinds of food.

  1. True

  2. False

True

200

Which of the following is an aquatic ecosystem? 

  1. Savanna

  2. Mangrove swamp

  3. Coral reefs

Coral reefs

200

Which of the following is a decomposer?

  1. Grass

  2. Eagle 

  3. Mushroom

Mushroom

200

Which is a way that a drought changes an ecosystem?

  1. Beaches wash away 

  2. Plants die from lack of water

  3. Plants have more room to grow

Plants die from lack of water

300

Illness caused by pathogens growing in your body

  1. Virus

  2. Infection

  3. Epidemic

Infection

300

What is the name of the product that makes someone immune to a certain virus?

  1. Injection

  2. Vaccine

  3. Antibiotic

Vaccine

300

Which of the following is NOT a way pathogens can spread?

  1. Contaminated objects

  2. Infected people

  3. An allergy to peanuts

An allergy to peanuts

300

The cells that make up your immune System are your____________

  1. Skin cells

  2. Red blood cells 

  3. White blood cells

White blood cells

300

When it stops raining and the sun comes out, the water in the street ____________

  1. Evaporates

  2. Condenses

Evaporates

400

After someone bathes in very hot water, the steam ______________ on the mirrors and windows. 

  1. Evaporates

  2. Condenses

Condenses

400

What process would most likely affect rocks in a desert?

  1. Erosion by water

  2. Erosion by wind

  3. Gravity

Erosion by wind

400

What is the movement of the Earth that allows us to differentiate day and night?

  1. Rotation

  2. Nutation

  3. Precession

Rotation

400

 How long does it take the Earth to revolve around the Sun?

  1. 30 days 

  2. 24 hours

  3. 365 days

365 days

400

The Sun is the farthest star from Earth and the smallest star in the solar system.         

  1. True

  2. False

False

500

What length of time does it take Earth to complete one rotation on its axis 

  1. About one day 

  2. About one month

  3. About one year

About one day 

500

When it is summer in the United States, what season is it in Brazil?

  1. Winter

  2. Spring 

  3. Summer

Winter

500

What is the result of the revolution of Earth around the sun and the tilt of Earth's axis?

  1. Day and night 

  2. The different seasons 

  3. shadows

The different seasons 

500

How long does it take Earth to make one revolution around the sun?

  1. About one day

  2. About one month 

  3. About one year

About one year

500

If you can see all of the lit half of the moon, which phase is it?

  1. New moon

  2. Full moon phase

  3. First quarter phase 

Full moon phase