MATH-SCI SPECTACULAR 2024 - AVERAGE ROUND

Maria is growing two plants. She gives one plant regular water and the other plant sugary water. After two weeks, she notices that the plant with regular water is taller. What is Maria's experiment testing?

• The type of water plants needs to grow

• The amount of sunlight plants needs

• The best soil for growing plants

• The temperature plants need to grow

John wants to find out how the length of a shadow changes throughout the day. He records the shadow of a tree every hour. What is the independent variable in John's experiment?

• The time of day

• The length of the shadow

• The height of the tree

• The weather conditions

Sara is making lemonade. She stirs 4 spoons of sugar into a glass of water, but the sugar doesn't dissolve completely. What could she do to help the sugar dissolve faster?

• Add more sugar

• Stir the mixture more slowly

• Heat the water

• Add cold water

Which of the following is a qualitative observation?

• The rock weighs 5 kg

• The solution is blue in color

• The tree is 10 meters tall

• The temperature is 25°C

During an experiment, Alex measures the temperature of water every minute after placing it on a hot plate. Which tool is he using to gather data?

• Ruler

• Thermometer

• Stopwatch

• Balance scale

Emma observes that a metal spoon gets hot when placed in a cup of hot soup. What kind of property is she observing?

• Physical property

• Chemical property

• Magnetic property

• Electrical property

Tom is testing different types of soil to see which is best for growing beans. What is the dependent variable in his experiment?

• The type of soil

• The amount of water

• The growth of the beans

• The temperature of the room

Which of the following statements is true about matter?

• All matter has mass and takes up space

• Only solids have mass

• Liquids do not have a definite volume

• Gases do not take up space

If you want to measure the mass of a small rock, which tool would be most appropriate to use?

• Measuring tape

• Graduated cylinder

• Triple beam balance

• Beaker

Lily is mixing salt into water to see how much will dissolve. She adds salt a little at a time and stirs. What will happen when the water becomes saturated?

• The water will turn into salt

• The salt will stop dissolving and settle at the bottom

• The salt will dissolve faster

• The water will evaporate