Which state of matter isn’t quite a solid and isn’t a gas either?

Lily and Jackson are at the beach, watching the water move up and down along the shore. What is the general name for the rising and falling of sea levels in response to the forces exerted by the Moon and Sun?

Olivia and Daniel are planning a trip around the world and want to know: Approximately what fraction of Earth’s surface is covered by oceans?

Abigail and William are measuring the length of their classroom. Can you help them by choosing the correct SI base unit for length?

Which of the following 3 choices are units you can use to measure distance: meter; mile; watt?

Oliver and Henry are learning about the heart in science class. They wonder: Most of the heart is composed of which of the following types of tissues?

Noah and Priya are discussing the scientific name Homo sapiens in class. Priya wonders what taxonomical rank the word sapiens represents. Can you help them out?

Harper and Ethan are building a model of an atom in science class. To make their atom neutral, which atomic particle should they add to balance out the charge of the protons?

The atomic number of an element is determined by the number of which atomic particle?

Which of the Gas giant planets is closest to the Sun?

Emma and Liam are on a geology adventure! They discover a mysterious rock and want to know what causes rocks to change deep underground. Can you help them out? What are the 2 main factors causing the metamorphism of rocks?

What is generally considered the basic unit of life?

Avery and Liam are exploring a plant cell under a microscope. They spot the organelle where photosynthesis happens. Can you help them identify it?

Lily and Daniel are curious about how grape juice magically turns into wine and how soy beans become delicious soy sauce. What is the name of this amazing biochemical process?

Henry and Kai are searching their home for a bubbly antiseptic that breaks down into water and oxygen. What is the common name for this household hero?

What is the correct chemical formula for hydrogen peroxide?

What term is generally used for biological catalysts?

Isla, Aiden, and Sophia are planning a picnic, but the weather forecast says there's 100% relative humidity. What does this mean they should be prepared for?

Which SI base unit is used to measure mass?

What is the SI base unit for measuring electric current?

During science class, Olivia and Avery are curious about the air they breathe. Which chemical symbol represents the element that is essential for respiration and makes up about 21% of Earth's atmosphere?

Grace and Abigail are curious about how plants make their own food. What is the name for the process by which plants convert sunlight into chemical energy?

Which organelle is the powerhouse, producing energy in most eukaryotic cells?

Which subatomic particle is found in the nucleus and has no electric charge?

Benjamin and Isla are exploring a cell under a microscope. They notice a thin layer surrounding the cell. What important job does this cell membrane do?

Anika and Harper are watching the sun shine on a lake. They notice that the water seems to disappear from the surface over time. What is the process called when water changes from a liquid to a gas at the surface of a body of water?

Benjamin and Zoe are stargazing and spot a planet with dazzling rings through their telescope. Which planet in our solar system are they most likely looking at?

Zoe and Lily are exploring the cell in their science class. Which organelle do they discover is called the 'control center' of the cell?

James and Arjun are having a friendly debate in class. James says the planet with a reddish appearance is called the 'Red Planet.' Arjun isn't sure. Can you help them out? Which planet is known as the 'Red Planet' due to its reddish appearance?

During a science experiment, Aria and Isla exhale into a test tube. What is the chemical formula for the gas they just released, known as carbon dioxide?

Emma and Lucas are learning about the building blocks of matter. Which subatomic particle carries a positive electric charge and is found in the nucleus of an atom?

During a science lesson, Mia and Jack are curious about the gas plants release during photosynthesis. Which chemical symbol represents this essential gas?

What is the most common term for the energy an object has because of its position or configuration?

What is the ultimate energy source for nearly all life on Earth?

Ella and Noah are learning about the solar system. They see a planet with a giant red spot and many moons. Which planet are they most likely observing?

During a science class, Mia and Ethan are discussing how animals get energy from food. What is the name of the process by which cells break down glucose to release energy?

Lucas and Ava are studying atoms. Which subatomic particle is negatively charged and orbits the nucleus?

Amelia and Jack are learning about how rocks form. Which type of rock is created when molten material cools and solidifies?

Ella and Mason are learning about the states of matter. Which state of matter has a definite volume but no definite shape?

Harper and Ethan are curious about the smallest unit of an element that retains its properties. What is this unit called?

Chloe and Benjamin are studying the solar system. Which planet is the largest in our solar system?

Which organelle in plant cells is responsible for storing water, nutrients, and waste products?

What is the main function of the nucleus in a eukaryotic cell?

Which part of the atom contains both protons and neutrons?

Ella and Noah are learning about how animals adapt to their environments. Which of the following best describes the process by which organisms better suited to their environment survive and reproduce more successfully?

Which of the following best describes a food chain in an ecosystem?

Olivia and Mason are exploring a forest. They notice that some animals eat only plants, while others eat both plants and animals. What is the term for animals that eat only plants?

Which of the following is an example of a biotic factor in an ecosystem?

Which of the following is a major way humans contribute to air pollution?

Emma and Noah are learning about the environment. What is the main cause of deforestation by humans?

Which human activity is most responsible for the increase in greenhouse gases in Earth's atmosphere?

Which of the following best describes an ecosystem?

What role do decomposers play in an ecosystem?

Which of the following best describes a chemical reaction?

During a chemical reaction, what is the name given to the substances that are formed as a result?

Which of the following is an example of a chemical reaction?

Which force pulls objects toward the center of the Earth?

Emma and Liam notice that a ball rolls farther on a smooth floor than on a carpet. Which force is responsible for slowing the ball down on the carpet?

Olivia and Jack are riding their bikes down a hill. What type of energy do their moving bikes have?

Which of the following is a renewable source of energy?

When you rub your hands together quickly, they feel warmer. What type of energy transformation is taking place?

Which of the following is the broadest level in the modern classification of life?

Which of the following groups contains only organisms that can make their own food through photosynthesis?

What is the process called when a species changes over time to better adapt to its environment?

Which of the following is an example of evidence for evolution?

Olivia and Ethan are learning about climate change in science class. Which gas is considered the main contributor to the greenhouse effect and global warming?

Which of the following is a major effect of climate change on Earth's oceans?

Emma and Lucas are learning about how traits are passed from parents to offspring. What is the name of the molecule that carries genetic information in most living things?

During a science lesson, Ava and Noah are curious about the structures inside a cell that contain genes. What are these structures called?

Olivia and Jack are learning about why children often look like their parents. What is the name of the process by which traits are passed from parents to offspring?

Harper and Ethan notice that some pea plants have purple flowers while others have white flowers. What do we call the different forms of a gene that determine these traits?

Olivia and Ethan are studying why some pea plants are tall and others are short. Which of the following best explains the relationship between genotype and phenotype?

Lucas and Mia are comparing how much force is needed to move a heavy box versus a light box. According to Newton's Second Law of Motion, what happens to the acceleration of an object if the same force is applied to objects of different masses?

Sophia and Liam are jumping off a small step. When Sophia lands, she feels the ground push back against her feet. Which law of motion best describes this action?

Which of the following materials is the best conductor of electricity?

What happens to the magnetic field around a wire when an electric current flows through it?

Sophia and Liam are experimenting with magnets in science class. What happens when you bring the north pole of one magnet close to the north pole of another magnet?

Ella and Noah are using a compass to find directions. Why does the needle of a compass always point north?

Which of the following materials will a magnet attract?

Emily and Liam are curious about what happens when you rub a balloon on your hair and it sticks to the wall. What is the name of the type of electricity created by rubbing certain materials together?

Olivia and Ethan are building a simple circuit with a battery, a bulb, and wires. What will happen if they remove one wire from the circuit?

Emma and Noah are rubbing their hands together on a cold day. What causes their hands to feel warmer?

Ella and Mason are experimenting with musical instruments. What property of a sound wave determines how high or low a note sounds?

During a science experiment, Mia and Leo shine a flashlight through a glass of water and notice a rainbow on the wall. What is the process called when light bends as it passes from one material to another?

Olivia and Ethan are curious about why we see our reflection in a mirror. Which property of light is responsible for this phenomenon?

Lucas and Ava are learning about the speed of light. Which of the following best describes how fast light travels in a vacuum?

Which of the following best describes how sound travels through air?

Emma and Lucas are experimenting with musical instruments. What happens to the pitch of a sound if the frequency of the sound wave increases?

Which instrument is commonly used to measure atmospheric pressure?

Sophia and Liam are watching clouds form in the sky. What is the process called when water vapor cools and changes back into liquid droplets to form clouds?

Which of the following weather phenomena is characterized by a rotating column of air that extends from a thunderstorm to the ground?

Which of the following best describes the main cause of ocean currents?

Olivia and Mason are learning about the Gulf Stream. What effect does the Gulf Stream have on the climate of Western Europe?

Which of the following is a major difference between surface currents and deep ocean currents?

Which of the following is NOT a form of electromagnetic radiation?

Which part of the electromagnetic spectrum has the shortest wavelength?

When you push a box across the floor, which contact force opposes the motion?

Which state of matter has particles that are tightly packed and only vibrate in place?

Density is defined as which of the following ratios?