Grade 4 Science NGSS Quiz

Imagine you're starting a garden. What is the first stage of your plants' life cycle?

• Flowering

• Seed dispersal

• Germination

• Pollination

Answer explanation

The first stage of a plant's life cycle is germination, where the seed sprouts and begins to grow into a seedling.

Tags

NGSS.3-LS1-1

How do polar bears adapt to their freezing Arctic habitat?

• Developing long roots

• Growing thick fur

• Changing color

• Producing seeds

Answer explanation

Polar bears adapt to their freezing Arctic habitat by growing thick fur, which helps them stay warm in the cold environment.

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Imagine you're gardening. Which part of the plant do you ensure is well in the soil for water and nutrient absorption?

• Leaves

• Roots

• Stems

• Flowers

Answer explanation

In gardening, the roots of the plant need to be well in the soil for water and nutrient absorption, making them crucial for the plant's health and growth.

Tags

NGSS.4-LS1-1

What is the main function of a dog's heart?

• To digest food

• To pump blood throughout the body

• To filter water

• To absorb nutrients

Answer explanation

The main function of a dog's heart is to pump blood throughout the body, providing oxygen and nutrients to cells and removing waste products.

Imagine you are a botanist studying plants in the Sahara Desert. Which adaptation would you most likely observe in the plants thriving in this harsh environment?

• Large leaves

• Thin bark

• Deep roots

• Bright flowers

Answer explanation

In the harsh Sahara Desert environment, plants would most likely have deep roots to access water sources deep underground.

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Imagine you're starting a garden. What are the main components you need to consider for the soil?

• Water, air, and plants

• Rocks, minerals, and organic matter

• Sand, silt, and clay

• B) and C) are correct

Answer explanation

The main components to consider for soil are rocks, minerals, organic matter, sand, silt, and clay. These components provide nutrients, structure, and water retention for plants to grow effectively.

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How does the Grand Canyon primarily form over time?

• The process of soil and rock being moved by wind or water

• The breaking down of rocks into smaller pieces

• The depositing of soil and rock in new locations

• The growth of plants in soil

Answer explanation

The Grand Canyon primarily forms over time through the process of soil and rock being moved by wind or water.

Tags

NGSS.4-ESS2-1

Imagine you're observing a mountain trail over several seasons. Which of the following best describes the changes you notice in the rocks along the path?

• The movement of water through soil

• The process of water freezing and thawing, breaking rocks apart

• The building up of layers of soil

• The removal of topsoil by wind

Answer explanation

The correct choice describes the process of water freezing and thawing, breaking rocks apart, which is a common phenomenon in mountain trails over several seasons.

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During a geography field trip, students observed various natural landforms. Which of these landforms is primarily formed by the process of erosion?

• Mountain

• Canyon

• Volcano

• Glacier

Answer explanation

A canyon is primarily formed by the process of erosion, where water and wind wear away the rock over time to create a deep, narrow valley.

Tags

NGSS.4-ESS2-1

What is the main role of leaves in a plant in a garden?

• To absorb nutrients

• To support the plant

• To perform photosynthesis

• To attract pollinators

Answer explanation

Leaves in a plant perform photosynthesis, the process by which plants convert sunlight into energy, making it the main role of leaves in a garden.

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