Flashcards Science

A process used to ask questions, test ideas, and find answers.
Steps often include question → hypothesis → experiment → analyze → conclude.
⚠ Common Mistake: Thinking the steps must always be in the same order.
⏱ In 10 seconds: What step usually comes after forming a question?

A hypothesis is an educated guess you can test.
Example: “Plants grow faster with more sunlight.”
⚠ Common Mistake: Confusing hypothesis with opinion.
⏱ In 10 seconds: Is your hypothesis testable?

It’s the factor you change on purpose in an experiment.
Example: amount of sunlight
⚠ Common Mistake: Mixing it with the outcome.
⏱ In 10 seconds: What did the scientist change?

It’s what you observe or measure as a result.
Example: plant height
⚠ Common Mistake: Thinking it’s the thing you control.
⏱ In 10 seconds: What depends on the independent variable?

Factors kept constant so the test is fair.
Example: same soil, same pot, same water amount.
⚠ Common Mistake: Ignoring uncontrolled factors.
⏱ In 10 seconds: Name one thing you must keep the same.

It’s the group that does not get the change, used to compare results.
Example: Plants with normal sunlight.
⚠ Common Mistake: Thinking all groups must be changed.
⏱ In 10 seconds: What does the control group show?

The group that receives the change being tested.
Example: Plants with extra sunlight.
⚠ Common Mistake: Mixing it with the control group.
⏱ In 10 seconds: What change does this group get?

Larger groups give more reliable results.
Example: Testing 30 plants is better than 3 plants.
⚠ Common Mistake: Drawing conclusions from tiny samples.
⏱ In 10 seconds: Why is a bigger sample better?

Repeating experiments reduces the chance of errors or luck.
Example: Testing a reaction 5 times.
⚠ Common Mistake: Using only one test.
⏱ In 10 seconds: What happens if results differ a lot?

A table organizes data clearly so you can compare values easily.
Example: time vs plant height.
⚠ Common Mistake: Misreading rows and columns.
⏱ In 10 seconds: What two categories are being compared?

Bar graphs compare amounts across different groups.
Example: fruit sales by type.
⚠ Common Mistake: Ignoring the scale on the axis.
⏱ In 10 seconds: Which bar is tallest?

Line graphs show how something changes over time.
Example: temperature each hour.
⚠ Common Mistake: Reading the line as exact between points.
⏱ In 10 seconds: Is it increasing or decreasing?

Pie charts show parts of a whole as percentages.
Example: 25% = one-fourth of the circle.
⚠ Common Mistake: Comparing slices without looking at labels.
⏱ In 10 seconds: What percent is the whole pie?

Each dot shows a pair of related values.
Example: hours studied vs score.
⚠ Common Mistake: Expecting a perfect line.
⏱ In 10 seconds: Is there a pattern?

Positive: both rise.
Negative: one rises, the other falls.
None: no pattern.
Example: hours studied & score → positive.
⚠ Common Mistake: Thinking correlation = cause.
⏱ In 10 seconds: Which correlation is shown?

A trend is the general direction of data points.
Example: sales rising over months.
⚠ Common Mistake: Focusing on one point instead of the pattern.
⏱ In 10 seconds: Is the line mostly going up or down?

An outlier is a value far outside the normal pattern.
Example: 5, 6, 7, 40 → 40 is outlier.
⚠ Common Mistake: Ignoring outliers without checking why.
⏱ In 10 seconds: Which number doesn’t fit?

Cause = what you change. Effect = what changes because of it.
Example: more sunlight → taller plants.
⚠ Common Mistake: Confusing correlation with cause.
⏱ In 10 seconds: What was the cause?

A scientific claim is a statement supported by data.
Example: “Plants grow faster with extra light.”
⚠ Common Mistake: Giving opinions instead of evidence.
⏱ In 10 seconds: What evidence supports the claim?

Good scientific evidence comes from measurements, data, or observations.
Example: “Plants with extra light grew 5 cm more.”
⚠ Common Mistake: Using feelings or beliefs as evidence.
⏱ In 10 seconds: Is this evidence measurable?

A cell is the smallest unit that can perform all life functions.
Example: skin cells, blood cells.
⚠ Common Mistake: Thinking cells are only in animals.
⏱ In 10 seconds: What is the job of a cell?

The nucleus controls the cell and stores DNA.
Example: The “control center.”
⚠ Common Mistake: Confusing nucleus with mitochondria.
⏱ In 10 seconds: What important molecule is here?

Mitochondria turn food into energy the cell can use.
Example: the “powerhouse.”
⚠ Common Mistake: Thinking mitochondria store DNA.
⏱ In 10 seconds: What kind of energy do they produce?

The membrane controls what enters and exits the cell.
Example: letting nutrients in, waste out.
⚠ Common Mistake: Thinking it’s only protection.
⏱ In 10 seconds: What does the membrane allow?

Chloroplasts use sunlight to make food (photosynthesis).
Example: green leaves.
⚠ Common Mistake: Thinking animals have chloroplasts.
⏱ In 10 seconds: What process happens here?

Plants use sunlight, water, and CO₂ to make sugar and oxygen.
Example: trees creating oxygen.
⚠ Common Mistake: Thinking plants “eat soil.”
⏱ In 10 seconds: What gas do plants release?

Cells break down sugar with oxygen to release energy.
Example: your muscles using energy.
⚠ Common Mistake: Confusing with breathing (lungs).
⏱ In 10 seconds: What two things does respiration need?

DNA carries your traits and instructions for the body.
Example: eye color.
⚠ Common Mistake: Thinking all traits are from one gene.
⏱ In 10 seconds: Where is DNA stored?

A gene is a small piece of DNA that controls one trait.
Example: hair color.
⚠ Common Mistake: Thinking genes change easily.
⏱ In 10 seconds: What trait can a gene control?

Chromosomes are long strands of DNA with many genes.
Example: humans have forty-six.
⚠ Common Mistake: Confusing chromosomes with cells.
⏱ In 10 seconds: What are chromosomes made of?

Dominant traits show if at least one copy is present;
Recessive traits show only if two copies are present.
Example: brown eyes (dominant).
⚠ Common Mistake: Thinking recessive = “weaker.”
⏱ In 10 seconds: What trait shows with one dominant allele?

It shows the chances of offspring inheriting traits.
Example: Bb × Bb → seventy-five percent chance of brown eyes.
⚠ Common Mistake: Thinking results are guaranteed.
⏱ In 10 seconds: What does each box represent?

Organisms with helpful traits survive and pass them on.
Example: giraffes with longer necks.
⚠ Common Mistake: Thinking animals “decide” to change.
⏱ In 10 seconds: What gives an organism an advantage?

A trait that helps an organism survive.
Example: thick fur in winter.
⚠ Common Mistake: Thinking adaptation happens instantly.
⏱ In 10 seconds: Why is this trait helpful?

An ecosystem includes organisms and their environment.
Example: forest, desert, ocean.
⚠ Common Mistake: Confusing ecosystem with habitat.
⏱ In 10 seconds: Name one living and one nonliving factor.

Producers (plants) make food using sunlight.
Example: grass, trees.
⚠ Common Mistake: Thinking all green things are producers.
⏱ In 10 seconds: What process do producers use?

Consumers cannot make food; they eat plants or animals.
Example: humans, wolves, cows.
⚠ Common Mistake: Forgetting herbivores are consumers too.
⏱ In 10 seconds: What do consumers rely on for energy?

Decomposers recycle nutrients by breaking down dead organisms.
Example: fungi, bacteria.
⚠ Common Mistake: Thinking decomposers are “bad.”
⏱ In 10 seconds: Why are decomposers important?

A food chain shows how energy moves from producers to consumers.
Example: grass → rabbit → fox.
⚠ Common Mistake: Thinking food chains show all interactions.
⏱ In 10 seconds: What is the first link?

A food web shows how multiple food chains link in an ecosystem.
Example: in a forest, many animals eat the same plant.
⚠ Common Mistake: Thinking one animal eats only one food.
⏱ In 10 seconds: How is a web different from a chain?

Matter is anything that has mass and takes up space.
Example: air, water, metal, your body.
⚠ Common Mistake: Thinking gases are “not matter.”
⏱ In 10 seconds: Name one thing that is matter.

Solids keep shape, liquids change shape, gases spread out.
Example: ice → solid; water → liquid; steam → gas.
⚠ Common Mistake: Thinking solids can’t change form.
⏱ In 10 seconds: What state takes the shape of its container?

The appearance changes, but the substance stays the same.
Example: ice melting into water.
⚠ Common Mistake: Confusing melting with chemical change.
⏱ In 10 seconds: Did a new substance form?

A chemical change creates a new substance with new properties.
Example: rust, burning wood.
⚠ Common Mistake: Thinking dissolving sugar is chemical.
⏱ In 10 seconds: Is there a new substance?

Mass cannot be created or destroyed, only changed in form.
Example: burning a log → ash + gases = same total mass.
⚠ Common Mistake: Thinking matter disappears.
⏱ In 10 seconds: Does mass increase or stay the same?

A force is any push or pull that changes motion.
Example: kicking a ball.
⚠ Common Mistake: Thinking force = speed.
⏱ In 10 seconds: Name one force.

Gravity is the force that pulls objects toward Earth.
Example: dropping a pen.
⚠ Common Mistake: Thinking gravity doesn’t affect light objects.
⏱ In 10 seconds: What direction does gravity act?

Friction is a force that slows down motion when surfaces rub.
Example: brakes on a bike.
⚠ Common Mistake: Thinking friction always stays the same.
⏱ In 10 seconds: More friction = more or less sliding?

Speed = distance ÷ time.
Example: sixty miles per hour.
⚠ Common Mistake: Mixing speed with acceleration.
⏱ In 10 seconds: What two things do you need to calculate speed?

Energy is the ability to do work or cause change.
Example: sunlight, electricity.
⚠ Common Mistake: Thinking energy = electricity only.
⏱ In 10 seconds: Name one type of energy.

Earth has a thin crust, thick mantle, and hot core.
Example: volcanoes come from the mantle.
⚠ Common Mistake: Thinking the crust is very thick.
⏱ In 10 seconds: What is Earth’s outer layer?

Earth’s surface is divided into plates that move slowly.
Example: earthquakes, mountains form.
⚠ Common Mistake: Thinking plates move fast.
⏱ In 10 seconds: What event happens when plates shift?

Rocks can become igneous, sedimentary, or metamorphic.
Example: melted rock → igneous.
⚠ Common Mistake: Thinking rocks stay the same forever.
⏱ In 10 seconds: Name one rock type.

Weathering breaks down rocks into smaller pieces.
Example: ice cracking rock.
⚠ Common Mistake: Confusing weathering with erosion.
⏱ In 10 seconds: Does weathering move rock?

Erosion moves rock pieces from one place to another.
Example: rivers carrying sand.
⚠ Common Mistake: Confusing erosion with weathering.
⏱ In 10 seconds: Does erosion break or move rock?

Water moves through stages: evaporation, clouds form, rain falls.
Example: puddles drying after rain.
⚠ Common Mistake: Thinking the cycle has an end.
⏱ In 10 seconds: What step forms clouds?

Weather = day-to-day conditions;
Climate = long-term pattern.
Example: today is rainy (weather), the region is dry (climate).
⚠ Common Mistake: Using weather to judge climate.
⏱ In 10 seconds: Which changes faster?

Renewable resources can be replaced naturally.
Example: solar energy.
⚠ Common Mistake: Thinking renewable = unlimited always.
⏱ In 10 seconds: Name one renewable resource.

Nonrenewable resources take millions of years to form.
Example: fossil fuels.
⚠ Common Mistake: Thinking these can be “regrown.”
⏱ In 10 seconds: Name one nonrenewable resource.

The solar system includes the sun, eight planets, moons, and other objects.
Example: Earth, Mars, Jupiter.
⚠ Common Mistake: Thinking the sun orbits Earth.
⏱ In 10 seconds: What is at the center?