Nature of Science
Scientists agree that the steps of the scientific method do not need to be completed in the same order every time. What step does a scientist perform after completing the procedure and collecting data?
A. Forming a hypothesis
B. Testing a hypothesis
C. Drawing a conclusion
D. Making an observation
C: Drawing a conclusion
Kevin wants to measure the volume of a large box to mail his cousin’s birthday present. Which tool should he use to find the volume of the box?
A. Graduated cylinder
B. Ruler
C. Thermometer
D. Two balance scale
Which of the following materials does NOT dissolve in water?
A. Salt
B. Sugar
C. Sand
D. Instant coffee
C: Sand
Which of the following is an example of a chemical change?
Making ice cubes in a tray
Water evaporating out of a bird bath
Leaves falling off the tree and decaying
Condensation on the outside of your Sprite
C: Leaves falling off the tree and decaying
Which of the following statements would describe the way light behaves when it encounters a dark colored wall?
Light will bend as it travels through the material.
Light will bounce off and travel in another direction.
Light will travel towards the wall and then stop traveling.
Light will bounce off the wall and then travel directly up.
3. Light will travel towards the wall and then stop traveling.
A testable question is one that can be answered by investigating and collecting data. Which of the following is a question that could be used for a scientific investigation?
A. How do you measure the mass of an object?
B. Should I measure the temperature in Celsius or Fahrenheit?
C. How far can you kick the rubber ball?
D. How does the amount of fertilizer affect plant growth?
D: How does the amount of fertilizer affect plant growth?
Giana’s science teacher blew up a balloon and then it popped during class. Which statement describes what happens when the balloon popped?
A. The air stays in the shape of the balloon.
B. The volume of the air expands.
C. The air remains compressed in the balloon.
D. The volume of the air decreases.
B: The volume of the air expands.
Tanisha has a mixture of seashells, sand, water, iron filings, and salt. What would be the best way to separate the seashells from the mixture?
Use a magnet
Use a strainer
Use a funnel with a filter
Use heat for evaporation
2: Use a strainer
Which of the following is an example of a physical change?
Baking a cake in the oven
The wick of a candle burning
Strawberries rotting and starting to grow mold
Ice cream melting in a bowl
Sheila experiments to find out how long it takes ice to melt in room temperature water. She places an ice cube in 100 ml of room temp. water and uses a stopwatch to time it. She records the melting time as 1 minute 24 seconds. What should she do next to make sure her investigation is valid?
She should have her classmate repeat the investigation that she did.
She should put an ice cube in hot water to find its melting time.
She should repeat the same process two more times.
She should share what she found with other scientists.
3. She should repeat the same process two more times.
Amari’s dad was moving cars out of his family’s driveway. The driveway was located in strong sunlight. Amari observed that the family’s white car was cooler inside than the family’s black car. He wants to do an experiment to see whether color makes a difference in the amount of radiant energy a metal surface absorbs. What should he do next?
A. analyze evidence
B. plan an experiment
C. draw a conclusion
D. communicate results
B. plan an experiment
Ryan was reading a text that was missing its title. The article was describing objects that are made of frozen gases, ice, and dust. They come from the outermost parts of the solar system. What should be the title of the article?
Asteroids
Comets
Planets in the solar system
Milky Way galaxy
2. Comets
Carla and Mike are using a filter and a funnel to try to separate mixtures into their original parts. Which mixture can be most easily separated using this method?
A. dry salt and dry sugar
B. dry sand and dry salt
C. water and salt
D. water and sand
D: Water and sand
Which conclusion is true about the relationship between temperature and changes in matter?
A. Heat does not affect physical or chemical changes.
B. Heat only affects physical changes, but not chemical changes.
C. The hotter the temperature, the slower a physical or chemical change occurs.
D. The hotter the temperature, the faster a physical or chemical change occurs.
D. The hotter the temperature, the faster a physical or chemical change occurs.
Tyrell is studying how to change the pitch of sounds he is making. Which statement accurately describes the relationship between vibrations and pitch?
Fast vibrations produce low-pitched sounds.
Fast vibrations are always loud.
Fast vibrations produce high-pitched sounds.
Slow vibrations produce high-pitched sounds.
3. Fast vibrations produce high-pitched sounds.
Rosa conducts an experiment. Her results do not support her hypothesis. What should she do?
A. Repeat the experiment to check for errors.
B. Change the results to support the hypothesis.
C. Discard the data because it does not agree with her hypothesis.
D. Try to make an experiment that will give her the results she wants.
A: Repeat the experiment to check for errors.
Water can exist in different states: solid, liquid, or gas.
Ice: Solid water Water: Liquid water Water Vapor: Water as a gas
Which of the following statements is true about the temperature of water in each state?
A. Water vapor has the same temperature as liquid water.
B. Solid water is warmer than liquid water but colder than water vapor.
C. Liquid water is coldest out of all three states.
D. Liquid water is the coldest of all three states.
A – Solid water is coldest out of all 3 states.
Jin was in his kitchen trying to make mixtures using ingredients from her pantry. He was mixing different ingredients with water. Which ingredient would form a solution when added to water?
Soil
Sand
Oil
Sugar
4. Sugar
Brett’s grandma always tells him to put a paper towel under his cup so the water on the outside of the cup doesn’t leave a mark on the table. Which process causes water droplets to form on the outside of the cup?
Evaporation
Condensation
Boiling
Melting
2. Condensation
Ms. Harrison’s class is learning about the forms of energy. One of the forms they discussed is chemical energy. Which of the following is NOT an example of chemical energy?
Toy car that runs on batteries
A student feeling energetic after eating an apple
Pushing the gas pedal when driving a car
Plugging in the toaster to make a bagel
4. Plugging in the toaster to make a bagel
For her science fair project, Marcy is investigating how levels of carbon dioxide affect plant growth. Which of the following is most important for Marcy to do?
She needs to make sure her results match her predictions.
She needs to make sure that her results contain both words and numbers.
She needs to make sure that the explanation of her results is based on evidence.
She needs to make sure her results get published so that everyone can read them.
C. She needs to make sure that the explanation of her results is based on evidence.
Which of the following explains why a parachute makes a person falling from a great height fall more slowly?
A. The parachute reduces the friction in the air.
B. The parachute pulls upward, so the fall is slower.
C. The parachute causes air resistance, which slows the fall.
D. The parachute decreases the pull of gravity on the person wearing it.
C. The parachute causes air resistance, which slows the fall.
The Mohs’ scale identifies the hardness of minerals. It lists diamond as the hardest mineral. What does this mean?
A. Diamonds can scratch any other mineral.
B. Diamonds weigh more for a given size than any other mineral.
C. Diamond is the only mineral that does not leave a streak on a tile plate.
D. Diamond is the only mineral that will not break when hit with a hammer.
A. Diamonds can scratch any other mineral.
Micah placed a beaker of water on a hot plate. When bubbles started forming in the water, he observed it. After 5 min, he notice the beaker was full of bubbles. What happened during the 5 min that Micah was observing the beaker of water?
Water was changed into energy during a
chemical change.
Water was changed into a different
state during a physical change.
Water was changed into a different
material during a physical change.
Water was changed into a different
material during a chemical change.
Water was changed into a different
state during a physical change
Many natural resources are used to transform energy into electricity.
Water, wind, and solar energy are renewable resources that people use to make electricity.
Oil and coal are non-renewable resources that people use to make electricity.
Which of the lists below names natural resources that are found in Florida?
Water, wind, oil, coal
Water, wind, solar, oil
Water, solar, coal
Water, solar, oil, coal
2. Water, wind, solar, oil