MOTLI SCIENCE 25-26 GR2 (PART1 0F 2)

​MOTLI SCIENCE GR2

By Margrethe Concepcion

Multiple Choice

What planet has large rings?

• Mars

• Saturn

• Mercury

• Neptune

Multiple Choice

Maxwell noticed that the Sun seems to move from East to West across the sky during the day. What is really happening?

• The sun is moving around the Earth

• The clouds make it move

• The stars push the Sun

• Earth is rotating on its axis

Multiple Choice

Maven used a telescope and saw many stars forming a pattern called Orion. What is Orion?

• A planet

• A constellation

• A comet

• A Galaxy

Multiple Choice

Leon saw a large object with a bright tail moving slowly across the sky. What is it?

• A star

• A comet

• A satellite

• A planet

Multiple Choice

Mrs. Gonzales uses a magnet to lift nails, while Mrs. Verdejo pushes a toy train. How are their forces different?

• Both use contact forces.

• Mrs. Gonzales uses a contact force, Mrs. Verdejo uses a non-contact force.

• Mrs. Gonzales uses a non-contact force, Mrs. Verdejo uses a contact force.

• Both us non-contact forces.

Multiple Choice

The unit of force is named after a famous scientist. Which unit is it?

• Newton

• Watt

• Joule

• Pascal

Multiple Choice

A book on the table stays still even though gravity is pulling it down. Why doesn't it fall?

• The book has no weight.

• The air is holding it up.

• The table pushes it up with an equal force.

• Gravity stops working on books.

Multiple Choice

Ama Loida blew a balloon and left it in the sun. After while, it looked bigger. What caused this to happen?

• The air inside disappeared.

• The balloon grew by itself.

• The air inside expanded when heated.

• The rubber stretched on its own.

Multiple Choice

Braeden noticed that an empty plastic bottle placed in ice water got crushed after being taken out. Why did this happen?

• The air inside cooled and tool less space.

• Air entered the bottle.

• The bottle broke by itself.

• The bottle melted.

Multiple Choice

Why do hot-air balloons rise up in the sky?

• Hot air is heavier that cold air.

• Hot air expands and becomes lighter, lifting the balloon.

• The balloon is filled with water.

• The wind pulls it upward.

Multiple Choice

During the day a rainbow appeared in the sky. What caused the rainbow?

• The colors came from clouds.

• Water droplets split sunlight into different colors.

• The rain painted the sky.

• The sun changed its colors.

Multiple Choice

During Science class, Teacher Lea placed a plastic bottle with air inside in warm water. The bottle became a little rounder. Which statement best explains this?

• The air disappeared.

• The bottle got heavier.

• Air inside expanded when heated.

• Warm air takes less space.

Multiple Choice

Bixie wore a white shirt and a black shirt under the sunlight. She felt hotter in the black shirt. Why?

• White reflects all colors; black absorbs them.

• Black reflects light; white absorbs it.

• Sunlight makes shirts heavy.

• The white shirt cools itself.

Multiple Choice

A red and blue flashlight shine together on a white wall. What color will appear where the lights overlap?

• Purple

• Green

• Yellow

• Black

Multiple Choice

When the light shines on a red apple, the apple looks red. Why does this happen?

• The apple produces red light.

• The apple changes the light color.

• Te apple absorbs red light.

• The apple reflects red light and absorbs other colors.

Multiple Choice

Teacher Monica turned on the light and it glowed instantly. Which unit measures the electric current flowing in the wire?

• Ampere

• Watt

• Volt

• Ohm

Multiple Choice

Which tool would a scientist use to measure electric current?

• Barometer

• Ammeter

• Thermometer

• Speedometer

Multiple Choice

Olie covered her ears when a car horn blew loudly. Which unit is used to measure how loud a sound it?

• Newton

• Decibel

• Watt

• Ampere

Multiple Choice

When lightning flashes, we see it first before we hear thunder. Why?

• Light travels faster than sound.

• Sound travels faster than light.

• Thunder starts later.

• The clounds make light first.

Multiple Choice

The speed of light is very large. Which unit is it measured in?

• meter per second (m/s)

• decibel

• volt

• ampere

Multiple Choice

JJ connects one battery and one bulb using wires. The bulb lights up. What does this show about the circuit?

• It is an open circuit.

• It is a closed circuit.

• It has no current.

• It is a parallel circuit.

Multiple Choice

Gavin connects two bulbs in one linewith one battery. When she removes one bulb, both bulbs go out. What kind of circuit did Ana make?

• Open circuit

• Magnetic circuit

• Series circuit

• Parallel circuit

Multiple Choice

Zack shows a setup where two bulbs are connected to one battery, but one bulb burns out and the other stays bright. What type of connection is this?

• Series

• Closed

• Parallel

• O

Multiple Choice

In a parallel circuit, each bulb is connected to the battery directly. Why is this type of circuit often used in homes?

• Because it saves batteries.

• Because if one light goes off, others still work!

• Because it makes lights dimmer.

• Because it uses only one wire.

Multiple Choice

When you mix sand and water, you can still see both sand and water. What type of change happened?

• Chemical change

• Physical change

• No change

• E

Multiple Choice

Which of the following shows a chemical change?

• Paper being folded

• Water freezing

• Wood burning

• Ice melting

Multiple Choice

Rust forms when Iron reacts with air and water. What kind of change is rusting?

• Chemical

• Physical

• Reversible

• Temporary

Multiple Choice

Coco squeezed a lemon and added it to baking soda. Bubbles formed right away! Why did this happen?

• It's freezing

• It's dissolving only

• It's a chemical change because gas formed.

• It's a physical change because it can be undone.

Multiple Choice

Earth's crust is mostly made up of which element?

• Oxygen

• Gold

• Carbon

• Mercury

Multiple Choice

Maximillian is planting vegetables in her garden. He notices that plants grow better in soil than in sand. What element in the soil helps plants grow well?

• Plastic

• Iron

• Oxygen

• Nutrients like nitrogen and potassium

Multiple Choice

A factory wants to make wires for electricity. Which element should they choose?

• Copper

• Carbon

• Chalk

• Sulfer

Multiple Choice

Sophia squeezed some lemon juice on a spoon and tasted it. "It's sour!'' she said. What can we say about lemon juice?

• It is a base

• It is neutral

• It is an acid

• It has no PH

Multiple Choice

Marge used soap to wash her hands after painting. His hands felt slippery. What does this tell us about soap?

• It is acidic

• It is neutral

• It is basic (alkaline)

• It has no PH

Multiple Choice

A gardener tested two soils: one had a pH of 4, the other had a pH of 7. The plants grew better in soil pH7. Why?

• Plants like very acidic soil.

• Plants grow best in neutral soil.

• Soil with pH 4 has more water.

• Soil with pH 4 has more color.

Multiple Choice

When cars pass by her school, Liza notices a smoky smell and has trouble breathing. What kind of pollution is this?

• Land

• Water

• Noise

• Air

Multiple Choice

When people burn plastic waste, thick black smoke goes into the air. Why is burning plastic dangerous?

• It smells nice.

• It gives off colorful light.

• It releases poisonous pollutants.

• It helps plants grow.

Multiple Choice

In Science class, students tested air near a busy road and near a park. The air near the road had more dust and smoke. What can we call these dust and smoke particles?

• Pollutants

• Vitamins

• Fresh air

• Clouds

Multiple Choice

After cooking, Ben's mom turns off the gas stove to save fuel. Why should people save gas?

• Gas is renewable.

• Gas can be easily replaced by water.

• Gas is non-renewable and can run out.

• Gas is made from sunlight.

Multiple Choice

A bus runs using gasoline, After a long trip it needs to be refilled at a gas station. Why is gasoline considered non- renewable?

• It is made by sunlight.

• It takes millions of years to form again.

• It can be refilled easily.

• I

Multiple Choice

Liza saw a dam with rushing water spinning turbines to make electricity. Which energy source is this using?

• Coal

• Oil

• Hydropower (water energy)

• Natural gas

Multiple Choice

Liza's mother uses a metal pan for cooking because it heats food quickly. Which property of metals helps her cook food faster?

• Metals are soft like cloth.

• Metals conduct heat well.

• Metals can absorb water.

• Metals are light and soft.

Multiple Choice

During a science fair, a student built a bridge model using aluminum instead of wood. Why was this a better choice?

• Aluminum is soft and weak.

• Aluminum absorbs water.

• Alunimum is strong and does not rust easily.

• Aluminum absorbs water.

Multiple Choice

Arnulfo used a metal spoon to stir her hot chocolate and noticed the handle because warm. What does this tell us about metals?

• They let heat and electricity pass through.

• They are non-conductors.

• They are soft like plastic.

• They cannot carry current.

Multiple Choice

Joshua made a simple electric circuit using a battery, a bulb, and wires. The bulb didn't light up when he added a plastic piece between the wires. Why didn't ot work?

• The plastic is a non- conductor.

• The plastic is a conductor.

• The battery was too weak.

• The bulb was broken.

Multiple Choice

During a Science test, Ben used different materials to close an electric circuit. Only the metal made the bulb glow. What does this show?

• The nail is a non-conductor.

• The wire has no electricity.

• The nail is a conductor.

• The bulb is broken.

Multiple Choice

The Science teacher asked students to bring an object that conducts electricity. Which item should they bring?

• Alunimum foil

• Glass cup

• Rubber ball

• Wooden ruler

Multiple Choice

Lily touched a light switch made of plastic. Even though the wires inside carry electricity, she was safe. Why?

• Plastic is a metal

• Electricity does not pass through switches

• Plastic is a non- conductor

• Plastic is a conductor

Multiple Choice

After cooking, Lala's mom turns off the gas stove to save fuel. Why should people save gas?

• Gas is made from sunlight.

• Gas is non-renewable and can run out.

• Gas can be easily replaced by water.

• Gas is renewable.

Multiple Choice

Tom's family uses solar panels on their roof to power their lights during the day. What kind of energy sources are they using?

• Fuel energy

• Chemical energy

• Renewable energy

• Non-renewable energy