Grade 5 Science: 10 Free Practice Questions

Answer: It reduces water loss and deters animals from eating the plant
Thick, waxy skin reduces the surface area exposed to dry air and slows water evaporation, while spines, rather than broad leaves, further reduce water loss and physically protect the plant from being eaten by animals. Photosynthesis does not produce water as a way to compensate for dryness, and this adaptation is not primarily about attracting pollinators or absorbing extra sunlight.

Answer: rain gauge
A rain gauge collects rain.

Answer: Oxygen in the air
Oxygen is a gas that makes up a significant portion of the air we breathe and exists in the gas state at typical room temperature. A wooden table and a metal spoon are solids, and liquid milk is, as its name indicates, in the liquid state, none of which are gases.

Answer: The height from which the car is released
The release height (and force applied) must be kept constant so that differences in distance traveled can be attributed only to the surface material being tested, which is the independent variable.

Answer: Analyze the flight data to find the cause of the veering and modify the design accordingly
Identifying a specific failure point (veering left) and using that evidence to guide a targeted redesign is the core of the iterate-and-improve step. Starting over unnecessarily or ignoring the problem does not use the data collected.

Answer: It is released into the environment as heat
Much of the energy an animal uses for activities like movement and maintaining body temperature is released as heat into the environment. It is not all stored, fully transferred to predators, or converted back into sunlight.

Answer: A tsunami
A tsunami is a series of powerful ocean waves typically generated by a sudden, large displacement of water, often caused by an underwater earthquake, and these waves can travel across vast distances and cause significant damage when they reach a coastline. A regular tide is the predictable daily rise and fall of sea level caused by gravitational forces, a river current refers to the movement of water within a river, and a whirlpool is a rotating body of water, none of which describe the large, earthquake-generated waves of a tsunami.

Answer: A pie chart
A pie chart is specifically designed to show how a whole is divided into proportional parts, making it well-suited for displaying the percentage of students who prefer each of four different science topics. A line graph is better suited for showing continuous change over time, a single data point without a chart would not effectively communicate proportional relationships, and a thermometer diagram is used to represent temperature, not categorical proportions of a group.

Answer: The changing apparent position of the sun in the sky as Earth rotates
As Earth rotates on its axis, the sun's apparent position in the sky changes from sunrise to sunset, causing the angle of sunlight to change and shadows to shift in length and direction throughout the day.

Answer: Using reusable bags instead of single-use plastic bags
Using reusable bags reduces the overall amount of single-use plastic produced and discarded, helping to prevent plastic waste from reaching oceans.