PRAXIS: Elementary Education: Three
Subject Bundle—Science (5905)
Questions and Answers Latest Version
100% Pass
What is the difference between a physical change and a chemical change in matter?
✔✔ A physical change alters the form or appearance of matter without changing its chemical
composition, while a chemical change results in the formation of new substances with different
properties.
Explain why the water cycle is important for life on Earth.
✔✔ The water cycle continuously moves water through evaporation, condensation, and
precipitation, providing fresh water to ecosystems and supporting all living organisms.
Describe how plants produce their own food.
✔✔ Plants use photosynthesis to convert sunlight, carbon dioxide, and water into glucose (food)
and oxygen, which they need to grow and survive.
What are the three states of matter, and how do they differ?
1
,✔✔ The three states are solid, liquid, and gas. Solids have a fixed shape and volume, liquids
have a fixed volume but take the shape of their container, and gases have neither fixed shape nor
volume.
How do animals adapt to their environments? Provide an example.
✔✔ Animals develop physical or behavioral traits that help them survive in their habitat. For
example, polar bears have thick fur and fat to stay warm in the Arctic.
What role do producers play in an ecosystem?
✔✔ Producers, like plants and algae, create energy through photosynthesis, forming the base of
the food chain and supporting all other organisms.
Describe the process of erosion and its effects on the landscape.
✔✔ Erosion is the wearing away of soil and rock by wind, water, or ice, which changes the
shape of the land and can create valleys or deposit sediment elsewhere.
What is the difference between renewable and nonrenewable resources?
2
,✔✔ Renewable resources can be replenished naturally over short periods, like solar energy or
trees, while nonrenewable resources, like coal and oil, exist in finite amounts and take millions
of years to form.
Explain why the Sun is essential for Earth’s climate and life.
✔✔ The Sun provides energy that drives weather, supports photosynthesis in plants, and
maintains temperatures suitable for life.
What is the function of the roots in a plant?
✔✔ Roots anchor the plant in soil and absorb water and nutrients necessary for growth.
Describe the main parts of the water cycle.
✔✔ The main parts are evaporation (water turns into vapor), condensation (vapor cools into
clouds), precipitation (water falls as rain or snow), and collection (water gathers in bodies of
water).
How does gravity affect objects on Earth?
✔✔ Gravity pulls objects toward the center of the Earth, giving them weight and causing things
to fall when dropped.
3
, What is the role of decomposers in an ecosystem?
✔✔ Decomposers, such as fungi and bacteria, break down dead plants and animals, returning
nutrients to the soil for reuse by producers.
Explain how simple machines make work easier.
✔✔ Simple machines like levers, pulleys, and inclined planes reduce the amount of force needed
to move objects by changing the direction or magnitude of the force.
What are the differences between conductors and insulators of electricity?
✔✔ Conductors allow electric current to flow easily, like metals, while insulators resist the flow,
like rubber or plastic.
Describe how clouds form.
✔✔ Clouds form when water vapor cools and condenses into tiny water droplets or ice crystals
in the atmosphere.
What is the importance of recycling materials?
4
Subject Bundle—Science (5905)
Questions and Answers Latest Version
100% Pass
What is the difference between a physical change and a chemical change in matter?
✔✔ A physical change alters the form or appearance of matter without changing its chemical
composition, while a chemical change results in the formation of new substances with different
properties.
Explain why the water cycle is important for life on Earth.
✔✔ The water cycle continuously moves water through evaporation, condensation, and
precipitation, providing fresh water to ecosystems and supporting all living organisms.
Describe how plants produce their own food.
✔✔ Plants use photosynthesis to convert sunlight, carbon dioxide, and water into glucose (food)
and oxygen, which they need to grow and survive.
What are the three states of matter, and how do they differ?
1
,✔✔ The three states are solid, liquid, and gas. Solids have a fixed shape and volume, liquids
have a fixed volume but take the shape of their container, and gases have neither fixed shape nor
volume.
How do animals adapt to their environments? Provide an example.
✔✔ Animals develop physical or behavioral traits that help them survive in their habitat. For
example, polar bears have thick fur and fat to stay warm in the Arctic.
What role do producers play in an ecosystem?
✔✔ Producers, like plants and algae, create energy through photosynthesis, forming the base of
the food chain and supporting all other organisms.
Describe the process of erosion and its effects on the landscape.
✔✔ Erosion is the wearing away of soil and rock by wind, water, or ice, which changes the
shape of the land and can create valleys or deposit sediment elsewhere.
What is the difference between renewable and nonrenewable resources?
2
,✔✔ Renewable resources can be replenished naturally over short periods, like solar energy or
trees, while nonrenewable resources, like coal and oil, exist in finite amounts and take millions
of years to form.
Explain why the Sun is essential for Earth’s climate and life.
✔✔ The Sun provides energy that drives weather, supports photosynthesis in plants, and
maintains temperatures suitable for life.
What is the function of the roots in a plant?
✔✔ Roots anchor the plant in soil and absorb water and nutrients necessary for growth.
Describe the main parts of the water cycle.
✔✔ The main parts are evaporation (water turns into vapor), condensation (vapor cools into
clouds), precipitation (water falls as rain or snow), and collection (water gathers in bodies of
water).
How does gravity affect objects on Earth?
✔✔ Gravity pulls objects toward the center of the Earth, giving them weight and causing things
to fall when dropped.
3
, What is the role of decomposers in an ecosystem?
✔✔ Decomposers, such as fungi and bacteria, break down dead plants and animals, returning
nutrients to the soil for reuse by producers.
Explain how simple machines make work easier.
✔✔ Simple machines like levers, pulleys, and inclined planes reduce the amount of force needed
to move objects by changing the direction or magnitude of the force.
What are the differences between conductors and insulators of electricity?
✔✔ Conductors allow electric current to flow easily, like metals, while insulators resist the flow,
like rubber or plastic.
Describe how clouds form.
✔✔ Clouds form when water vapor cools and condenses into tiny water droplets or ice crystals
in the atmosphere.
What is the importance of recycling materials?
4
