Grade 5 Earth's Layer & Rocks
Force
What is the primary reason the Earth experiences four distinct seasons throughout the year?
What is the 23.5-degree tilt of Earth's axis as it revolves around the Sun? (Rotation)
Which organelle is known as the "control center" or "brain" of the cell because it stores DNA and directs all activities?
What is the nucleus?
In which state of matter are the particles locked tightly into a fixed position, vibrating in place with the lowest kinetic energy?
What is a solid?
When a roller coaster car sits completely motionless at the very peak of the highest hill, what type of energy does it have in its maximum amount?
What is potential energy (or gravitational potential energy)?
This is the thin, outermost rocky shell of the Earth that we live on and walk across every day.
What is the crust?
Which moon phase comes immediately after a Full Moon, during which the visible illuminated portion of the moon begins to decrease or shrink?
What is a waning gibbous?
Name two structural features that are found in plant cells but are completely missing from animal cells.
What are the cell wall and chloroplasts?
An iron nail left outside develops a reddish-brown coating of rust over time. What type of change is this?
What is a chemical change?
By which method of heat transfer does energy from the Sun travel across the empty vacuum of space to reach Earth?
What is radiation?
This layer is the largest and thickest layer of the Earth, made up of super-heated, semi-solid rock that moves very slowly like hot asphalt.
What is the mantle?
How long does it take for the Earth to complete one full rotation on its axis, and what does this rotation cause?
What is 24 hours (which causes day and night)?
What are the three primary raw inputs (ingredients) that a plant requires to perform photosynthesis?
What are carbon dioxide, water, and sunlight?
Define matter.
What is anything that has mass and takes up space?
Which type of force opposes motion when two physical surfaces slide or rub against one another?
What is friction?
This is the only entirely liquid layer of Earth, composed mostly of melted iron and nickel, which creates the planet's magnetic field.
What is the outer core?
What celestial alignment occurs during a solar eclipse?
What is when the Moon passes directly between the Sun and Earth, blocking the Sun's light?
The moon and a safety vest are similar sources of light because they both...
Reflect light from other light sources
A substance which takes the shape of its container and has a definite volume is a _________.
What is a liquid?
What type of heat transfer occurs in fluids (liquids or gases) when warm, less dense material rises and cold, denser material sinks?
What is convection?
What type of rock is formed deep underground when existing rocks are changed by intense heat and crushing pressure without completely melting?
What is metamorphic rock?
Which space object is a giant, glowing ball of hot gases (mostly hydrogen and helium) that produces its own light and heat through nuclear fusion?
What is a star (or the Sun)?
According to the scientific principles of Cell Theory, where do all new living cells come from?
What are pre-existing cells (through cell division)?
Evaporation is when .
What is a substance changes from a liquid to a gas (or vapor) naturally?
If a car travels a total distance of 120 miles in exactly 2 hours, what was its average speed?
What is convection?